couldn't've

== English == === Etymology === From couldn't + -'ve. === Pronunciation === (US) IPA(key): /ˈkʊd(ə)n(t)ə(v)/ === Contraction === couldn’t’ve (nonstandard) Could not have. ==== Synonyms ==== couldna (colloquial) === See also === shouldn't've wouldn't've oughtn't've