-in-waitingPronunciation: /ɪnˈweɪtɪŋ/Definition of -in-waiting combining form 1denoting a position as attendant to a royal personage:lady-in-waiting 2awaiting a turn, confirmation of a process, etc.:a political administration-in-waiting about to happen:an explosion-in-waiting-in-waiting in other Oxford dictionaries Definition of -in-waiting in the US English dictionary