(Internet slang, humorous) Exclamation of surprise or disbelief. / (Internet slang, humorous) Yes; I understand or can relate.

very, extremely (often ironic)

(slang, US) a naive or clueless person.

Some unspecified hour in the early morning (implies an unpleasant time to be awake).

Said in supplication. / (mildly blasphemous) An expression of anger, frustration, excitement, shock, awe, dismay, etc.

(US, Mormonism, euphemistic) for "Hell" from "Oh my hell" or "Oh hell!"

(idiomatic, chiefly US, euphemistic) oh my God!

(idiomatic) Some unspecified hour in the early morning (implies an unpleasant time to be awake)

(Britain, euphemistic) An exclamation of astonishment or gleeful disapproval.

Synonym of oh my days