Bad or undesirable; not positive.

Of a number or temperature: less than zero.

Of a test or screening: no evidence found; not detected.

Having the electric charge of an electron; not positive.

Tending to expect bad outcomes; pessimistic in outlook.

A photographic image with light and dark reversed.

An unfavorable point or weakness.

A quantity less than zero; a negative number.

A word or particle that expresses denial, like no or not.

A refusal or right to veto; the negative vote.

To reject or veto a proposal.

To contradict or deny a claim.

To make ineffective or counteract; to neutralize.

Used as a radio or official reply meaning no.