expression, godan verb (-su)
delay one's answer; put off replying
Used when someone intentionally postpones giving a response, often in social or business contexts.
彼はいつも返事を延ばすので、こちらから催促しなければならない。
He always delays his answer, so I have to remind him.
難しい質問だったの
It was a difficult question, so I ended up putting off my reply.