What words refer to what is said in answer?

answer, response, reply, acknowledgment, rebuttal, rejoinder, return, echo, feedback, immediate response, answer by return mail

What words describe an answer?

carefully worded, careful, well thought through, off the cuff, off hand, wise, stupid, thoughtless, foolish

What words refer to not having an answer or not knowing what to answer?

have no answer, lack answer, not know what to answer, don't know how to answer, don't know what to say, don't have an answer, can't answer