1. (verb)decrease, diminish, lessen, fall decrease in size, extent, or range Synonyms: shine, go down, accrue, diminish, strike, devolve, flow, precipitate, settle, lessen, come down, subside, pass, descend, come, fall, return, light, belittle, hang, decrease, minify, fall down
2. (verb)decrease, lessen, minify make smaller Synonyms: subside, decrease, minify, lessen, diminish, fall
3. (verb)subside, lessen wear off or die down Synonyms: fall, settle, minify, diminish, lessen, sink, decrease, subside
Synonyms, Thesaurus & Antonyms of 'lessen'
English Synonyms and Antonyms
1. lessen The storm, the fever, the pain abates. Interest declines. Misfortunes may be mitigated, desires moderated, intense anger abated, population decreased, taxes reduced. We abate a nuisan Synonyms: abate, decline, ebb, mitigate, reduce, decrease, lessen, moderate, subside, diminish, lower Antonyms: aggravate, enhance, foment, rage, amplify, enlarge, increase, raise, continue, extend, magnify, revive, develop
Synonyms for lessen 
