paṭipucchā

question in return, inquiry; only ˚-(as abl.) by question, by inquiry, by means of question & answer in foll. compounds: ˚karaṇīya Vin.i.325 -vinīta AN.i.72; -vyākaraṇīya (pañha) DN.iii.229.

paṭi + pucchā