All known antonyms
known
K k noun known
- magic number — the atomic number or neutron number of an exceptionally stable nuclide.
- grabber — a person or thing that grabs.
- brainteaser — an intellectually challenging puzzle, problem, game, etc.
- closed book — something deemed unknown or incapable of being understood
- thriller — a person or thing that thrills.
- teaser — a person or thing that teases.
- rebus — a representation of a word or phrase by pictures, symbols, etc., that suggest that word or phrase or its syllables: Two gates and a head is a rebus for Gateshead.
- inscrutableness — Inscrutability.
- abstruseness — hard to understand; recondite; esoteric: abstruse theories.
- inscrutability — incapable of being investigated, analyzed, or scrutinized; impenetrable.
- stumper — a person or thing that stumps.
- rune — a poem, song, or verse.
- sphinx — a figure of an imaginary creature having the head of a man or an animal and the body of a lion. (usually initial capital letter) the colossal recumbent stone figure of this kind near the pyramids of Giza.
- mystery — anything that is kept secret or remains unexplained or unknown: the mysteries of nature.
- secret — done, made, or conducted without the knowledge of others: secret negotiations.
- whodunit — a narrative dealing with a murder or a series of murders and the detection of the criminal; detective story.
adj known
- unknown — not known; not within the range of one's knowledge, experience, or understanding; strange; unfamiliar.
- concealed — to hide; withdraw or remove from observation; cover or keep from sight: He concealed the gun under his coat.
- hidden — concealed; obscure; covert: hidden meaning; hidden hostility.
- unclear — free from darkness, obscurity, or cloudiness; light: a clear day.
- vague — not clearly or explicitly stated or expressed: vague promises.
- ambiguous — If you describe something as ambiguous, you mean that it is unclear or confusing because it can be understood in more than one way.
- uncommon — not common; unusual; rare: an uncommon word.
- unfamiliar — not familiar; not acquainted with or conversant about: to be unfamiliar with a subject.
- obscure — (of meaning) not clear or plain; ambiguous, vague, or uncertain: an obscure sentence in the contract.