say it: di-FLAYT
deflate is a verb meaning "collapse by releasing contained air or gas". It carries 6 recorded senses.
reduce or lessen the size or importance of
“The bad review of his work deflated his self-confidence”
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 deflate 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.