reliable

1 of 2

adjective

re·​li·​able ri-ˈlī-ə-bəl 

1

: suitable or fit to be relied on : dependable

2

: giving the same result on successive trials

reliableness noun

reliably

ri-ˈlī-ə-blē 

adverb

reliable

2 of 2

noun

: one that is reliable

Synonyms

Adjective

• calculable
• dependable
• good
• responsible
• safe
• secure
• solid
• steady
• sure
• tried
• tried-and-true
• true
• trustable
• trustworthy
• trusty

Examples of reliable in a Sentence

Adjective

He's not very reliable. You can't always count on him to do what he says he'll do.

We can't write a report without reliable data.

We need more reliable information before we can take action.

Recent Examples on the Web

Adjective

Eisenberg, who co-stars here with Kieran Culkin, wrote himself a role that suits him ever so well, playing the by-the-book, uptight David, a married man with a reliable job and a reliable life. —Randy Myers, The Mercury News, 13 Nov. 2024

Chief among those potentially destabilizing forces is that a fellow Republican will be in the White House — a reliable drag on GOP members of Congress during midterm elections. —John Aguilar, The Denver Post, 12 Nov. 2024

Noun

Get your squash season up and running with Cuisinart, an old reliable with stainless steel designs that are even older and more reliable. —Julia Harrison, Architectural Digest, 5 Oct. 2024

No matter the situation, preflight grab-and-go Hudson News is the old reliable. —Cnt Editors, Condé Nast Traveler, 28 June 2024

Word History

First Known Use

Adjective

1569, in the meaning defined at sense 1

Noun

1852, in the meaning defined above

Kids Definition

reliable

adjective

re·​li·​able

ri-ˈlī-ə-bəl

: fit to be trusted : dependable

reliableness noun

reliably

-blē

adverb

Medical Definition

reliable

adjective

re·​li·​able ri-ˈlī-ə-bəl 

: giving the same result on successive trials

a reliable psychological test