Gram. designating or of the mood of a verb that is used to express supposition, desire, hypothesis, possibility, etc., rather than to state an actual fact (Ex.: the mood of were in “if I were you”)
noun
the subjunctive mood
a verb in this mood
See subjunctive in American Heritage Dictionary 4
sub·junc·tive
adjective
Of, relating to, or being a mood of a verb used in some languages for contingent or hypothetical action, action viewed subjectively, or grammatically subordinate statements.
Origin: Late Latin subiūnctīvus, from Latin subiūnctus, past participle of subiungere, to subjoin, subordinate (translation of Greek hupotaktikos, subordinate, subjunctive); see subjoin .