聞きき忘わすれるききわすれるConjugationMeanings1ichidan verb, transitive verbforget to askUsed when you intended to ask something but forgot to do so.大だい事じなことを聞きき忘わすれてしまった。I forgot to ask an important thing.先せん生せいに宿しゅく題だいの締しめ切きりを聞きき忘わすれた。I forgot to ask the teacher about the homework deadline.