negative

Expressing, containing, or consisting of a negation, refusal, or denial.

Indicating opposition or resistance.

Lacking positive or constructive features, especially.

Unpleasant; disagreeable.

Gloomy; pessimistic.

Unfavorable or detrimental.

Hostile or disparaging; malicious.

Not indicating the presence of a particular disease, condition, or organism.

Designating a proposition that denies agreement between a subject and its predicate.