at short notice (adverb) immediately: at once, right away
Sinonime: be at mercy of, be based on, be conditioned, be connected with, be determined by, be in control of, be in the power of, be subject to, be subordinate to, bottom, depend on, found, ground, hang, hang in suspense, hang on, hang upon, pend, re, rest, rest on
Antonime: eventually,
later,
never