(informal, Britain, Australia) Unacceptable or impossible.

(litotes) Reasonably good.

(UK) Not everything about life is pleasurable.

(anatomy) The conspicuous dip visible at the top of the human chest where the neck joins the sternum.

Alternative form of have-not

(usually contrastive) A poor or underprivileged person. / (uncommon) One who does not have some (contextually specified) thing.

(logic, mathematics) A function that is equivalent to the NOT operator.

A message, usually a written note, left by someone who later attempts or commits suicide, usually explaining the reason for the suicide.

(idiomatic) Something ordinary or run-of-the-mill. / (idiomatic) Nothing worth discussing; nothing that the speaker wants to mention.

(transitive) to be witness of the authenticity of a document and its accompanying signatures in one's capacity as notary public