say it: WEE-kuh-ning
weakening is a noun and adjective meaning "becoming weaker". It carries 4 recorded senses.
becoming weaker
the act of reducing the strength of something
causing debilitation
moderating by making pain or sorrow weaker
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for weakening come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.