"to accuse, bring charges against," 1794, from Medieval Latin inculpatus, past participle of inculpare "to reproach, blame, censure," from Latin in- "in" (from PIE root *en "in") + culpare "to blame," from culpa "fault." But inculpable (late 15c.) means "not culpable, free from blame," from Latin in- "not" (see in- (1)) + culpare.
incubator
incubus
inculcate
inculcation
inculpable
inculpate
inculpation
incumbency
incumbent
incumbrance
incunabula