(medicine) Of a blood type within the ABO and Rh blood grouping system. Blood type A negative has a phenotype of "A" and a Rhesus system classification of negative.

plural of negative

Third-person singular simple present indicative form of negative

Refusal or withholding of assents; prohibition, veto / An unfavorable point or characteristic. / (law) A right of veto.

(transitive) To refuse; to veto. / (transitive) To contradict. / (transitive) To disprove. / (transitive) To make ineffective; to neutralize, to negate.

(law, signalling) No; nay.

In a negative manner; so as to be damaging or not positive. / (responding to a question, proposal, vote, etc.) In the negative; with the answer “no.”

plural of negativeness

The characteristic of being negative; negativity.

being harmful, unwanted, or unhelpful