to fall from grace, to fall out of favour

to fall out of favour, to fall into disrepute

to break down (to fail)

to fall off a steep drop / to arrive just at the right time, to be well-timed

(intransitive) to be flabbergasted

(figuratively) to fall flat, to go down like a lead balloon, to not have the desired effect

(figuratively) to fall through

(figuratively) to be very surprised

to be knocked down a peg, to fall from one's pedestal

(figuratively) to fall through