definition of
decrease

[1] #1 decrease v. [diminish, lessen, fall] decrease in size, extent, or range; "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper". wn

[2] #2 decrease n. [lessening, drop-off] a change downward; "there was a decrease in his temperature as the fever subsided"; "there was a sharp drop-off in sales". wn

[3] #3 decrease v. [lessen, minify] make smaller; "He decreased his staff". wn

[4] #4 decrease n. [decrement] a process of becoming smaller or shorter. wn

[5] #5 decrease n. [decrement] the amount by which something decreases. wn