a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
O.E. rustig, from rust (see rust). Cf. Fris. roastich, M.Du. roestich, O.H.G. rostag, Ger. rostig. "In the 16th and 17th centuries frequently used as a term of general disparagement" [OED]. Of skills, accomplishments, etc., first attested 1796.