negative (adj.)

c. 1400, negatif, "expressing denial" (a sense now rare or obsolete), from Anglo-French negatif (early 14c.), Old French negatif (13c.) and directly from Latin negativus "that which denies," from negat-, past-participle stem of negare "deny, say no" (see deny).

The meaning "expressing negation" is from c. 1500; that of "characterized by absence of that which is affirmative or positive" is from 1560s. Algebraic sense, denoting quantities which are a subtraction from zero, is from 1670s. The electricity sense is from 1755.

Negative Capability, that is when a man is capable of being in uncertainties, Mysteries, doubts without any irritable reaching after fact and reason. [John Keats, letter, Dec. 21, 1817]

Related: Negatively.

negative (n.)

late 14c., "a prohibition" (a sense now obsolete), also "absence, nonexistence; opposite," from Old French negatif and directly from Latin negativus (see negative (adj.)).

Meaning "a negative statement" is from 1560s. Sense of "that side of a question which denies what the opposite side affirms" is from 1570s. Meaning "the right or power of refusing assent" is from 1610s. Meaning "a negative quality" is from 1640s. In mathematics, "a negative number," from 1706. Photographic sense of "image in which the lights and shades are the opposite of those in nature" is recorded by 1853. As a response, "I refuse, disagree, no," from 1945, originally in radio communication. 

negative (v.)

"reject, refuse to accept," 1706, from negative (adj.).

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Definitions of negative
negative (adj.)
characterized by or displaying negation or denial or opposition or resistance; having no positive features;
a negative outlook on life
a negative evaluation
a colorless negative personality
a negative reaction to an advertising campaign
negative (adj.)
expressing or consisting of a negation or refusal or denial;
negative (adj.)
having the quality of something harmful or unpleasant;
ran a negative campaign
delinquents retarded by their negative outlook on life
negative (adj.)
not indicating the presence of microorganisms or disease or a specific condition;
the HIV test was negative
Synonyms: disconfirming
negative (adj.)
reckoned in a direction opposite to that regarded as positive;
negative interest rates
negative (adj.)
less than zero;
a negative number
negative (adj.)
designed or tending to discredit, especially without positive or helpful suggestions;
negative criticism
Synonyms: damaging
negative (adj.)
having a negative charge;
electrons are negative
Synonyms: electronegative / negatively charged
negative (adj.)
involving disadvantage or harm;
minus (or negative) factors
Synonyms: minus
negative (n.)
a reply of denial;
he answered in the negative
negative (n.)
a piece of photographic film showing an image with light and shade or colors reversed;
negative (v.)
vote against; refuse to endorse; refuse to assent;
Synonyms: veto / blackball