unimpeachable

adjective

un·​im·​peach·​able ˌən-im-ˈpē-chə-bəl 

: not impeachable: such as

a

: reliable beyond a doubt

unimpeachable evidence

an unimpeachable source

b

: not liable to accusation : irreproachable

an unimpeachable reputation

unimpeachably

ˌən-im-ˈpē-chə-blē 

adverb

Examples of unimpeachable in a Sentence

a person of unimpeachable integrity

The information is from an unimpeachable source.

Recent Examples on the Web

Narvaez has no shot at starting — Seattle star Cal Raleigh’s case is unimpeachable — but the Red Sox rookie stacks up well against the AL’s other top contenders for the reserve spot. —Mac Cerullo, Boston Herald, 5 June 2025

However, while designers have sent the Y2K throwbacks down the runway with all sorts of footwear, fashion It girls have long declared an unimpeachable option: the tiny heeled sandal. —Emily Tannenbaum, Glamour, 18 Apr. 2025

This is an iconic work of narrative nonfiction that pairs unimpeachable reporting with advocacy and belief. —Los Angeles Times, 14 Apr. 2025

Related Stories Still, just because the source material is unimpeachable doesn’t automatically make all these adaptations good, or even memorable. —Courtney Howard, Variety, 8 May 2025

Word History

First Known Use

1784, in the meaning defined above

Rhymes for unimpeachable

• impeachable
• unreachable
• reachable
• teachable

Kids Definition

unimpeachable

adjective

un·​im·​peach·​able ˌən-im-ˈpē-chə-bəl 

: not impeachable : not to be doubted or questioned : irreproachable

an unimpeachable reputation

news from an unimpeachable source

unimpeachably

-blē 

adverb