What punctuation mark combines a question mark and an exclamation point?

The punctuation mark that combines a question mark and an exclamation point is the interrobang.

The interrobang is usually written as ‽, a single glyph combining the shapes or functions of “?” and “!” It is intended for questions that also express surprise, disbelief, excitement, or strong emotion, as in “You did what‽” Writers may also approximate it with “?!” or “!?” in ordinary text.

American advertising executive Martin K. Speckter proposed the mark in 1962 in the magazine TYPEtalks. He wanted advertisers to signal an excited rhetorical question without using two separate punctuation marks. Speckter chose “interrobang” from interrogatio, associated with questioning, and “bang,” printers’ slang for the exclamation mark.

The mark attracted attention in the 1960s, appearing in some typefaces and even on selected typewriter keyboards, but it never became standard punctuation. It was added to Unicode as U+203D, allowing digital systems to represent it directly. Most formal style guides still prefer conventional punctuation, so the interrobang is chiefly a playful or informal device.