bum out

== English == === Etymology === From bum (“unpleasant, depressing”). === Pronunciation === === Verb === bum out (third-person singular simple present bums out, present participle bumming out, simple past and past participle bummed out) (slang, transitive) To cause a person to be depressed or disappointed. ==== Usage notes ==== This phrase is mostly used in the passive voice or with the subject it, but unlike the synonymous standalone bum, there exist active-voice constructions such as Summer weather really bums me out.