adj, noun ·Common ·High school level

Definitions

Noun

1. 1
   Something or someone reliable or dependable

   "the old reliables"

Adjective

1. 1
   Suitable or fit to be relied on; worthy of dependence, reliance or trust; dependable, trustworthy

   "a reliable witness to the truth of the miracles"

2. 2
   Such that either a sent packet will reach its destination, even if it requires retransmission, or the sender will be told that it didn't.

Adjective

1. 1
   worthy of reliance or trust wordnet
2. 2
   conforming to fact and therefore worthy of belief wordnet
3. 3
   worthy of being depended on wordnet

Synonyms

All synonyms

dependableauthenticcertainsecuretried and truetrustworthy

Antonyms

All antonyms

iffyunreliableuntrustworthy

Example

More examples

"He is a good fellow, to be sure, but he isn't reliable."

Etymology

From rely + -able.

Related phrases

ol' reliablerely on

Related Topic Clusters

Sales and Marketing Copy Words

Conversion-oriented language for landing pages, ads, and lifecycle campaigns.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.