secret, covert, stealthy, furtive, clandestine, surreptitious, underhanded mean done without attracting observation. secret implies concealment on any grounds for any motive.

SECRET definition: done, made, or conducted without the knowledge of others. See examples of secret used in a sentence.

SECRET meaning: 1. a piece of information that is only known by one person or a few people and should not be told…. Learn more.

1. kept hidden or separate from the knowledge of others. 2. known only to initiates: a secret password. 3. hidden from general view or use: a secret garden.

A secret is a fact that is known by only a small number of people, and is not told to anyone else. I think he enjoyed keeping our love a secret. I didn't want anyone to know about it, it was my secret.

Definition of secret adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Jan 20, 2026 · Most dictionaries mark the form secret as obsolete, but the citations above and on the citations page demonstrate recent usage as part of the idiom “secret [something] away”.

Something not revealed, understood, or explained; mystery. The secret of Stonehenge.

A secret is something you don’t want everybody to know, like your secret crush on the bus driver. A secret can also be a mystery known to only a few — the secret of the lost pyramid.

The comprehensive definition of secret. Includes pronunciation, synonyms, etymology, and usage examples to help you master this word.