say it: STAHY-fuhld
stifled is an adjective meaning "held in check with difficulty". It carries one recorded sense.
held in check with difficulty
“a smothered cough”
“a stifled yawn”
“a strangled scream”
“suppressed laughter”
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 stifled 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.