early 15c., demitten, "to run or flow down," also figurative, "to humble oneself," from Old French demetre "to send, put, or let down," and directly from Latin demittere "to send down," from de "down" (see de-) + mittere "to release, let go; send, throw" (see mission).
demi-monde
demise
demisemiquaver
demiss
demission
demit
demi-tasse
demiurge
demo
demob
demobilization