Akademik

lessening
noun
a change downward (Freq. 5)
-

there was a decrease in his temperature as the fever subsided

-

there was a sharp drop-off in sales

Syn: ↑decrease, ↑drop-off
Ant: ↑increase (for: ↑decrease)
Derivationally related forms: ↑drop off (for: ↑drop-off), ↑decrease (for: ↑decrease)
Hypernyms: ↑change, ↑alteration, ↑modification
Hyponyms:
shrinking, ↑shrinkage, ↑casualty, ↑sinking, ↑attrition, ↑dwindling, ↑dwindling away, ↑waning

Useful english dictionary. 2012.