Invalidate. Nullify, cancel, annul, overthrow, make void.
Ant. Conserve, maintain, establish, confirm, enact, institute.
Invasion. Trespass, incursion, irruption, encroachment, inroad.
Ant. Evacuation, abandonment, relinquishment; settlement; retreat.
Invective. Satire, sarcasm, diatribe, railing, abuse; obloquy, denunciation, vituperation, reproach, castigation.
Ant. Praise, commendation, encomium, eulogy, panegyric.
Invent. Discover, find out, devise, contrive, produce; design, concoct, elaborate; conceive, contrive, fabricate, originate, forge, frame.
Ant. Copy, imitate, reproduce; execute.
Invention. Contrivance, construction, device; fiction, fabrication, falsehood; thought, idea.
Ant. Material.