Definition from Wiktionary, the free dictionary
|Kanji in this term|
Adverb 豈 (ani, rhetorical interrogative) + the irrealis of verb 図る (hakaru, “to think”) + suppositional particle ん (-n) (from -m, from -mu) + interrogative particle や (ya). Literally "(just) how could one think (such a thing so)?".
- an expression of surprise to an event that is contrary to one's expectations; unexpectedly, to [ones'] surprise, contrary to [one's] expectations