(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.

(sociology) Lacking benefits or advantages in society.

(grammar) a clause that states a negative

(economics) The opposite of economic growth; economic decline.

Not negative. / (mathematics) Of an element of a partially ordered ring, either positive or zero; not negative; greater than or equal to zero.

(derogatory, informal) A person who is considered excessively and disagreeably pessimistic.

A result of a test that shows as absent something that is present. / (statistics) A type II error (“accepting the null hypothesis when it is false”).

(curling) A shot in which the player curls the stone in the opposite direction in which the stone is expected to curve, due to significant defects in flatness of the ice surface

(biology) of an RNA strand that is complementary to the positive sense and not transcribed into DNA.

(finance) A type of loan or loan condition in which the borrower agrees with the lender not to allow any other lender or creditor to rank ahead for payment in the event of a liquidation. Such a loan is unsecured (ie. not backed by a charge over specific assets).