say it: TAY-pur-ing
tapering is an adjective and noun meaning "becoming gradually narrower". It carries 3 recorded senses.
gradually decreasing until little remains
the act of gradually lowering the size or amount
“the doctor prescribed the tapering of the dose”
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 tapering 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.