Definition of "offensive"
adjective
comparative more offensive, superlative most offensive
Relating to an offense or attack, as opposed to defensive.
Quotations
In his submission to the UN, [Christof] Heyns points to the experience of drones. Unmanned aerial vehicles were intended initially only for surveillance, and their use for offensive purposes was prohibited, yet once strategists realised their perceived advantages as a means of carrying out targeted killings, all objections were swept out of the way.
2013 June 7, Ed Pilkington, “‘Killer robots’ should be banned in advance, UN told”, in The Guardian Weekly, volume 188, number 26, page 6
noun
countable and uncountable, plural offensives
(countable, military) An attack.