KEY: Internecine.
SYN: Exterminating, deadly, irreconcilable, inextinguishable.
ANT: Desultory, incursive, maraud, ing, buccaneering, freebooting, filibustering, skirmishing, guerilla.
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KEY: Interpellation.
SYN: Interlocution, suspension, interference.
ANT: Promotion, prosecution, flow, conduct, uninterruptedness.
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KEY: Interpenetration.
SYN: interregression, interdigitation, dovetail, inoculation.