(Old English, Middle English: in, into; within; toward; a prefix used in front of English words, not Latin or Greek elements; as in the words, indoors and inland)

(Latin: in, into, within, inside, on, toward [il-, ir-, im-], in, into, etc.: involve, incur, invade; also, used intensively, as in the words inflame and inflammable, or without perceptible force.)