Open English Wordnet
Nouns
(n)decrease, lessening, drop-offa change downward“there was a decrease in his temperature as the fever subsided”,
“there was a sharp drop-off in sales” Verbs
(v)decrease, diminish, lessen, falldecrease 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”