What does 'IMHO' stand for?

“What does ‘IMHO’ stand for?” — It stands for “In My Humble Opinion.” The initialism signals that the writer is presenting a personal judgment rather than an objective fact, often while softening the tone of a disagreement or recommendation.

IMHO became established in online discussion culture, where short expressions helped people communicate quickly in forums, chat rooms, email, and message boards. It is normally read letter by letter, “I-M-H-O,” rather than pronounced as a word. The phrase can be sincere, but it can also be used humorously or ironically when someone is stating a strong opinion.

A frequent mix-up is “In My Honest Opinion,” which is also used by some writers and is sometimes abbreviated IMHO. In modern internet usage, however, “In My Humble Opinion” is the traditional and most widely recognized expansion. “IMO,” meaning “In My Opinion,” is a shorter form that does not include the deliberately modest word “humble.”