To fall in drops
drip, fall, dribble, trickle, descend, leak, ooze, percolate, emanate, distill, precipitate (out), seep, drain, filter, sink, bleed, bead, splash, rain, snow, purl, trill down, plash, plump, hail; see also rain.
Antonyms rise*, spurt, squirt.
To cause or permit to fall
let go, let fall, release, give up, shed, relinquish, abandon, discard, loosen, lower, plump, floor, ground, shoot, knock down, fell, unload, deposit, topple; see also down, dump.
Antonyms raise*, elevate, send up.
To tumble
cave in, plummet, sink, collapse; see faint, fall 1.
To discontinue
give up, quit, leave out; see abandon 1, dismiss 1, 2, omit 1.
*To break off an acquaintance
break with, part from, snub, cut, abandon, cast off, forsake, desert, leave, forget about, divorce, become alienated from, separate, withdraw, repudiate, fling aside, have done with, turn one's back on, lose*, ditch*, write off*, shake*, throw over*, brush off*; see also abandon 2.
Antonyms invite*, welcome, make friends with.
To become lower or less
decline, diminish, dwindle; see decrease 1.