Antonyms of noun deactivation

1 of 2 senses of deactivation

Sense 2
deactivation, defusing -- (the act of deactivating or making ineffective (as a bomb))
       Antonym of activation (Sense 3)
      => activation -- (making active and effective (as a bomb))

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun deactivation

2 senses of deactivation

Sense 1
deactivation, inactivation -- (breaking up a military unit (by transfers or discharges))
       => dismissal, dismission, discharge, firing, liberation, release, sack, sacking -- (the termination of someone's employment (leaving them free to depart))

Sense 2
deactivation, defusing -- (the act of deactivating or making ineffective (as a bomb))
       => termination, ending, conclusion -- (the act of ending something; "the termination of the agreement")