fairweather (adjective) untrustworthy: not dependable, unfaithful
Sinonime: adjourn, cool it,
defer, delay, give a rain check, hang fire, hold off, hold over, hold up, lay over, pigeonhole, prorogue, put back, put on back burner, put on hold, shelve, suspend, table
Antonime: carry out,
continue,
do, expedite, forward,
maintain,
persevere