I. verb
1.
to pass downward
fruit falling off a tree
the temperature fell sharply
Synonyms: descend, drop, lower
Related Word: decline, dip, plummet, sink; decrease, diminish, lessen; dangle, drag, droop, trail
Antonyms: rise
2.
to come down suddenly and involuntarily
fell on the ice
Synonyms: drop, go down, keel (over), pitch, plunge, slump, topple, tumble
Related Word: slip, sprawl, stumble, trip
Idioms: come a cropper, take a header, take a spill
Contrasted words: ascend, climb
3.
to suffer ruin, defeat, or failure
the city fell after a long siege
Synonyms: go down, go under, submit, succumb, surrender
Related Word: give up, yield
Contrasted words: endure, prevail, resist; conquer, triumph, vanquish, win
4.
Synonyms: abate 4, die (down or away), ease off, ebb, let up, moderate, relent, slacken, subside, wane
Antonyms: rise
5.
Synonyms: plummet , dip, drop, nose-dive, plunge, skid, tumble
II. noun
1.
Synonyms: descent 1, drop
2.
Synonyms: descent 4, decline, declivity, dip, drop
3.
usually falls plural but singular or plural in construction
Synonyms: waterfall , cascade, cataract, chute, ||force, sault, spout