Answer
Crossword Clue and Answers

Crossword Answers

2 letters

DO
An uproarious party

3 letters

KEY
Serving as an essential component; "a cardinal rule"; "the central cause of the problem"; "an example that was fundamental to the argument"; "computers are fundamental to modern industrial structure"

4 letters

RSVP

RESP

ECHO
A close parallel of a feeling, idea, style, etc.; "his contention contains more than an echo of Rousseau"; "Napoleon III was an echo of the mighty Emperor but an infinitely better man"

5 letters

REACT
Show a response or a reaction to something

REPLY
A statement (either spoken or written) that is made to reply to a question or request or criticism or accusation; "I waited several days for his answer"; "he wrote replies to several of his critics"

SERVE
(sports) a stroke that puts the ball in play; "his powerful serves won the game"

REBUT
Prove to be false or incorrect

ATONE
Turn away from sin or do penitence

6 letters

RESULT
A statement that solves a problem or explains how to solve the problem; "they were trying to find a peaceful solution"; "the answers were in the back of the book"; "he computed the result to four decimal places"

RETORT
A vessel where substances are distilled or decomposed by heat

REJOIN
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7 letters

RIPOSTE
A quick reply to a question or remark (especially a witty or critical one); "it brought a sharp rejoinder from the teacher"

SOLVENT
A statement that solves a problem or explains how to solve the problem; "they were trying to find a peaceful solution"; "the answers were in the back of the book"; "he computed the result to four decimal places"

SUFFICE
Be sufficient; be adequate, either in quality or quantity; "A few words would answer"; "This car suits my purpose well"; "Will $100 do?"; "A 'B' grade doesn't suffice to get me into medical school"; "Nothing else will serve"

RESOLVE
The trait of being resolute; "his resoluteness carried him through the battle"; "it was his unshakeable resolution to finish the work"

REPLYTO

RESPOND
React verbally; "She didn't want to answer"; "answer the question"; "We answered that we would accept the invitation"

8 letters

RESPONSE
A bodily process occurring due to the effect of some antecedent stimulus or agent; "a bad reaction to the medicine"; "his responses have slowed with age"

SOLUTION
A method for solving a problem; "the easy solution is to look it up in the handbook"

COMEBACK
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9 letters

REJOINDER
(law) a pleading made by a defendant in response to the plaintiff's replication

10 letters

RESOLUTION
A decision to do something or to behave in a certain manner; "he always wrote down his New Year's resolutions"

11 letters

ACKNOWLEDGE
Accept (someone) to be what is claimed or accept his power and authority; "The Crown Prince was acknowledged as the true heir to the throne"; "We do not recognize your gods"

RECIPROCATE
Act, feel, or give mutually or in return; "We always invite the neighbors and they never reciprocate!"

13 letters

COUNTERCHARGE
A retaliatory charge