rarely UK /ˈɹɛːli/US /ˈɹɛəɹli/ adverb3 •almost neverWe rarely go to the theatre.Rarely do you ever find an eagle this far up the river. •Unusually well; excellently.After all the schooling, I can finally write rarely now. •To a rare degree; very.I became a rarely good judge of the best in modern painting. formsmore rarely · rarelier · most rarely · rareliest