Decay
Decay verb - To become worse or of less value.
Usage example: the restaurant's standards for food and service had decayed over the years
Lessen and decay are semantically related in decline topic. In some cases you can use "Lessen" instead a verb "Decay", when it comes to topics like reduction, deteriorate, worsen.
Mutual synonyms
Common collocations
Both words in one sentence
-
Shinji and Asuka become increasingly violent, the latter descending into berserker madness during two months Shinji was missing, killing criminals every night to lessen her pain and loss, and Rei turns their apartment into a garbage-filled shrine to decay.
Source: Sanity Slippage
Cite this Source
Lessen and Decay. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/decay/lessen
Decay & Lessen. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/decay/lessen>.
Lessen or Decay. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/decay/lessen.
Google Ngram Viewer shows how "decay" and "lessen" have occurred on timeline