decrease

(noun) a change downward. Synonyms: lessening, drop-off. Examples: "There was a decrease in his temperature as the fever subsided." "There was a sharp drop-off in sales."

(noun) a process of becoming smaller or shorter. Synonyms: decrement.

(noun) the amount by which something decreases. Synonyms: decrement.

(noun) the act of decreasing or reducing something. Synonyms: diminution, reduction, step-down.

(verb) decrease in size, extent, or range. Synonyms: diminish, lessen, fall. Examples: "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."

(verb) make smaller. Synonyms: lessen, minify. Examples: "He decreased his staff."