Synonyms for Give way:

n.

sag, fall. retreat, withdraw, retire, recede. admit, accede.

v.

budge (verb)
yield.
chicken out (verb)
withdraw.
crack (verb)
collapse, break down.
crumple (verb)
fall.
fall (verb)
die.
weaken (verb)
ease up.

Other synonyms:

weaken
ease up.
yield
yield.