Antonyms for Active (opposite meaning)
WordNet sense 1 (the voice used to indicate that the grammatical subject of the verb is the recipient (not the source) of the action denoted by the verb):
passive, passive voice
WordNet sense 2 (a person devoted to the contemplative life):
contemplative
WordNet sense 3 (of the sun; characterized by a low level of surface phenomena like sun spots e.g.):
quiet
WordNet sense 4 (not exerting influence or change):
inactive
WordNet sense 5 (expressing existence or a state rather than an action; used of verbs (e.g. `be' or `own') and most participial adjectives):
stative
WordNet sense 6 ((of e.g. volcanos) permanently inactive):
extinct
WordNet sense 7 (of e.g. volcanos; not erupting and not extinct ):
dormant
From the ODE community, based on WordNet
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