on short notice (adjective) early: sooner than expected
Sinonime: accidental,
casual, chance, controlled by,
dependent, fluky,
fortuitous,
haphazard,
incidental,
likely,
odd,
probable,
probably, random, subject to, unanticipated, uncertain, unexpected, unforeseeable,
unforeseen,
unpredictableAntonime: certain,
definite,
real,
sure,
truthful,
unconditional