idealize identify ignite ignore illuminate illustrate imagine immunize impeach implant implode imply import impose impress improve inaugurate incite incline include incorporate increase incubate indent indicate induce infect infest inflate inform inherit inhibit initialize initiate inject injure inoculate insert insist inspect inspire install instruct insult integrate intend intensify interact intercept interpret interrupt intimidate introduce intrude invade invalidate invent invest investigate invite invoke involve ionize irrigate irritate isolate iterate