trustworthy

adjective

trust·​wor·​thy ˈtrəst-ˌwər-t͟hē 

: worthy of confidence : dependable

a trustworthy guide

trustworthy information

trustworthily

ˈtrəst-ˌwər-t͟hə-lē 

adverb

trustworthiness noun

Synonyms of trustworthy

• reliable
• responsible
• safe
• true

Examples of trustworthy in a Sentence

a trustworthy bodyguard who would never blab to the tabloids

Recent Examples on the Web

The 2026 American Academy of Pediatrics guidelines have been deemed trustworthy by 12 health care organizations that represent over a million pediatric medical professionals. —Kar-Hai Chu, The Conversation, 10 Apr. 2026

The human and microbial findings are likely trustworthy, says Christina Warinner, an anthropologist at Harvard University, who studies ancient microbiomes. —Stephanie Pappas, Scientific American, 9 Apr. 2026

The law notably establishes an independent registry of art forgery experts within the culture ministry to appraise and archive cases, with the aim of fostering a more trustworthy art market. —Tessa Solomon, ARTnews.com, 9 Apr. 2026

The most trustworthy way to preserve those important files and photos is on an external HDD or SSD. —K. Thor Jensen, PC Magazine, 8 Apr. 2026

Word History

First Known Use

1658, in the meaning defined above

Rhymes for trustworthy

• blameworthy
• newsworthy
• noteworthy
• praiseworthy
• unworthy
• creditworthy
• untrustworthy
• worthy

Kids Definition

trustworthy

adjective

trust·​wor·​thy ˈtrəst-ˌwər-t͟hē 

: deserving confidence : dependable

trustworthy information

a trustworthy babysitter

trustworthiness

-t͟hē-nəs

noun

Legal Definition

trustworthy

adjective

trust·​wor·​thy

: worthy of confidence

specifically : being or deriving from a source worthy of belief or consideration for evidentiary purposes

a trustworthy informant

trustworthiness noun