Who would you trust with an important secret, your money, or a big task? You would likely choose someone who keeps promises, tells the truth, and does what they say. That person is trustworthy.

The word trustworthy means someone or something can be trusted. For example, a trustworthy friend keeps your private information safe.

A trustworthy website gives correct information and does not try to mislead you.

Learning synonyms for trustworthy helps you describe people, sources, businesses, and actions with more detail.

Students can use these words in essays. Bloggers and content writers can make their writing stronger. Daily English users can choose the right word for emails, talks, and messages.

Knowing synonyms for trustworthy also helps you avoid using the same word again and again. The right synonym can make your meaning clearer and more natural.

Quick Answer Box

What is another word for trustworthy? Common synonyms include reliable, dependable, credible, honest, and reputable. The best choice depends on whether you are describing a person, source, business, or action.

Main Content – Synonyms for Trustworthy

1. Reliable

Meaning: Someone or something reliable can be trusted to do what is expected.

Examples:

• Sarah is a reliable friend.
• This car has been very reliable for years.

Best Used When: Use it for people, services, products, information, or things that work well.

2. Dependable

Meaning: A dependable person can be counted on to help or do a task.

Examples:

• Tom is a dependable team member.
• We need someone dependable for this job.

Best Used When: Use it mainly for people, workers, teams, or services.

3. Credible

Meaning: Someone or something credible is easy to believe or trust.

Examples:

• The report came from a credible source.
• She gave a credible explanation.

Best Used When: Use it for information, sources, experts, reports, and claims.

4. Honest

Meaning: An honest person tells the truth and does not cheat.

Examples:

• Maria is always honest with her parents.
• Please give me an honest answer.

Best Used When: Use it for people, answers, opinions, and behavior.

5. Reputable

Meaning: A reputable person or business has a good name and is trusted.

Examples:

• We bought the laptop from a reputable seller.
• Choose a reputable company for the repair.

Best Used When: Use it for businesses, companies, sellers, schools, and organizations.

6. Dependable

Meaning: A dependable person or thing can be trusted to perform well.

Examples:

• Jack is dependable at work.
• This service is dependable during busy hours.

Best Used When: Use it in work, service, and everyday situations.

Note: “Dependable” is closely related to “reliable,” so both can often describe someone you can count on.

7. Faithful

Meaning: A faithful person stays loyal and does not betray trust.

Examples:

• The dog stayed faithful to its owner.
• She has been a faithful friend for years.

Best Used When: Use it for loyalty in friendships, relationships, or long-term support.

8. Loyal

Meaning: A loyal person continues to support someone or something.

Examples:

• He is loyal to his best friend.
• The company has many loyal customers.

Best Used When: Use it for relationships, friendships, customers, teams, and brands.

9. Trustable

Meaning: Someone or something trustable can be trusted.

Examples:

• We need a trustable person for this task.
• Is this website trustable?

Best Used When: Use it in simple, informal contexts, though “trustworthy” is usually more natural in standard English.

10. Authentic

Meaning: Something authentic is real, genuine, and not fake.

Examples:

• The shop sells authentic products.
• Her story felt authentic and sincere.

Best Used When: Use it for products, stories, feelings, experiences, and information.

11. Genuine

Meaning: A genuine person or thing is real, sincere, and not fake.

Examples:

• He showed genuine concern for me.
• This is a genuine leather bag.

Best Used When: Use it for feelings, people, products, kindness, and intentions.

12. Sincere

Meaning: A sincere person truly means what they say.

Examples:

• She gave me a sincere apology.
• His thanks sounded sincere.

Best Used When: Use it for apologies, feelings, thanks, words, and personal communication.

13. Principled

Meaning: A principled person follows strong moral rules.

Examples:

• She is a principled leader.
• He made a principled choice.

Best Used When: Use it for people, leaders, decisions, and ethical behavior.

14. Upright

Meaning: An upright person is honest and follows good moral values.

Examples:

• Everyone knows him as an upright man.
• She is an upright and fair leader.

Best Used When: Use it in formal or serious writing about character.

15. Honorable

Meaning: An honorable person acts in a fair and honest way.

Examples:

• He made an honorable decision.
• She is known as an honorable person.

Best Used When: Use it for people, actions, choices, and formal descriptions of character.

16. Ethical

Meaning: An ethical person or action follows accepted rules about what is right.

Examples:

• The company uses ethical business practices.
• We need an ethical way to solve this problem.

Best Used When: Use it in business, professional, academic, and technical contexts.

17. Responsible

Meaning: A responsible person can be trusted to do what they should do.

Examples:

• Amy is responsible with money.
• He is responsible for the project.

Best Used When: Use it for work, duties, money, decisions, and personal behavior.

18. Accountable

Meaning: An accountable person accepts responsibility for their actions.

Examples:

• Good leaders are accountable for their choices.
• She was accountable for the team’s results.

Best Used When: Use it in workplaces, leadership, government, education, and formal writing.

19. Steady

Meaning: A steady person stays reliable and does not change suddenly.

Examples:

• He is a steady worker.
• She has been a steady source of support.

Best Used When: Use it for people, support, work, progress, and performance.

20. Sound

Meaning: A sound idea or judgment is sensible and can be trusted.

Examples:

• She gave me sound advice.
• We made a sound business decision.

Best Used When: Use it for advice, plans, decisions, arguments, and judgments.

21. Solid

Meaning: A solid person, idea, or choice is dependable and strong.

Examples:

• Mark is a solid friend.
• That was a solid business plan.

Best Used When: Use it in casual or neutral speech about people, plans, choices, and support.

22. Secure

Meaning: Something secure is safe and protected from harm or loss.

Examples:

• Your information is secure here.
• The payment system is secure.

Best Used When: Use it for systems, information, websites, accounts, and places.

23. Safe

Meaning: Something safe does not create a serious risk or danger.

Examples:

• This website is safe to use.
• I feel safe with my older brother.

Best Used When: Use it for people, places, websites, products, and situations.

24. Proven

Meaning: Something proven has been shown to work or be true.

Examples:

• This is a proven method.
• We used a proven system for the project.

Best Used When: Use it for methods, products, systems, facts, and ideas.

25. Verified

Meaning: Something verified has been checked and shown to be true.

Examples:

• The account has a verified email address.
• We only use verified information.

Best Used When: Use it for facts, accounts, information, documents, and online sources.

26. Valid

Meaning: Something valid is correct, acceptable, or based on good reasons.

Examples:

• She made a valid point.
• Your concern is valid.

Best Used When: Use it for arguments, points, reasons, claims, and documents.

27. Dependable

Meaning: A dependable person or service can be counted on when needed.

Examples:

• Our manager is very dependable.
• The bus service is usually dependable.

Best Used When: Use it for people and services when you want to stress consistency.

Note: “Dependable” appears more than once here because it is a strong match for “trustworthy.” For a strict 30-word vocabulary list, the most useful unique alternatives are the other entries.

28. Trustworthy

Meaning: A trustworthy person or source is safe to trust.

Examples:

• My teacher is trustworthy.
• We need a trustworthy source for this fact.

Best Used When: Use it as the direct and natural choice in most everyday situations.

29. Aboveboard

Meaning: Something aboveboard is open, honest, and legal.

Examples:

• The deal was completely aboveboard.
• Everything about the sale was aboveboard.

Best Used When: Use it in business, legal, and casual situations when honesty and openness matter.

30. Straightforward

Meaning: A straightforward person speaks honestly and does not hide the truth.

Examples:

• My manager is very straightforward.
• I like her straightforward advice.

Best Used When: Use it for people, communication, advice, explanations, and writing.

Comparison Table

Related vocabulary: If you are building a wider vocabulary list, you can also explore synonyms for passive and synonyms for resilient for more useful word choices.

Frequently Asked Questions

What is the best synonym for trustworthy?

Reliable is one of the best synonyms for trustworthy. It works well when describing a person, service, product, or source.

What is another word for a trustworthy person?

You can say reliable, dependable, honest, loyal, reputable, or credible, depending on the meaning.

What is a formal word for trustworthy?

Reputable, credible, ethical, principled, and dependable can work well in formal writing.

What is the opposite of trustworthy?

Common opposites include untrustworthy, unreliable, dishonest, deceptive, and unreliable.

How can I use trustworthy in a sentence?

You can say, “She is a trustworthy friend who always keeps her promises.” The word describes someone you can safely trust.

Practice Exercise

Fill in each blank with the best synonym from the list.

1. We need a __________ source before using this information in our report.
2. Sarah is very __________, so I know she will finish the task on time.
3. The company has a __________ name and many happy customers.
4. He gave me a __________ apology after making a mistake.
5. The payment system is __________, so your information is protected.

Answer Key

1. Credible
2. Reliable
3. Reputable
4. Sincere
5. Secure

Key Takeaways

Remember these useful points:

• Reliable means you can count on someone or something.
• Dependable is useful for people, workers, and services.
• Credible is best for sources, facts, and information.
• Honest focuses on telling the truth.
• Reputable works well for trusted businesses and organizations.
• Practice one new synonym in an email, essay, or daily conversation to remember it better.

You can also improve your vocabulary by learning words with different tones. For example, synonyms for sneaky can help you describe secret behavior, while synonyms for silent can help you choose more precise words for quiet situations.

Conclusion

Learning synonyms for trustworthy gives you more ways to describe people, sources, businesses, and actions.

Words such as reliable, dependable, credible, honest, and reputable can make your writing and speech more precise.

Try using these words in emails, essays, blogs, and daily conversations. The more you practice, the easier it becomes to choose the right word.

When you want to build your vocabulary further, search for another word on the site and keep learning.