keyed \ˈkēd\adjective Etymology: partly from key (I) + -ed; partly from past participle of key (II) 1.: furnished with keys < a keyed instrument > 2.: reinforced by a key or keystone < a keyed arch > 3.: set to a key (as a tune) 4.: adjusted, attuned, fitted < keyed to the present situation > < every thought keyed to the reaction of the strangers — Agnes S. Turnbull >