Self-acting
(a.) Acting of or by one's self or by itself; -- said especially of a machine or mechanism which is made to perform of or for itself what is usually done by human agency; automatic; as, a self-acting feed apparatus; a self-acting mule; a self-acting press.
Similar Words:
Self-abased Self-abasement Self-abasing Self-abhorrence Self-abnegation Self-abuse Self-accused Self-acting Self-action Self-active