Definitions from Wiktionary (could have sworn)
▸ verb: (informal) Is very sure about; especially when the thing in question is apparently not the case or could be doubted.
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▸ verb: (informal) Is very sure about; especially when the thing in question is apparently not the case or could be doubted.
Similar:
swear blind,
think one is it,
protest too much,
had it,
oversecure,
overguarantee,
exclaim,
have drink taken,
overcheck,
overcertify,
more...
▸ Words similar to could have sworn
▸ Usage examples for could have sworn
▸ Idioms related to could have sworn
▸ Wikipedia articles (New!)
▸ Words that often appear near could have sworn
▸ Rhymes of could have sworn
▸ Invented words related to could have sworn