"decreases" in the noun sense
1. decrease, 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"
2. decrease, decrement
a process of becoming smaller or shorter
3. decrease, decrement
the amount by which something decreases
4. decrease, diminution, reduction, step-down
the act of decreasing or reducing something
"decreases" in the verb sense
1. decrease, 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"
2. decrease, lessen, minify
"He decreased his staff"
Source: WordNet® (An amazing lexical database of English)
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