Webster's Revised Unabridged Dictionary · 1913

Answer

Answer (an"sẽr) , transitive verb

[Old English andswerien, Anglo-Saxon andswerian, andswarian, to answer, from andswaru, n., answer. See Answer, n.]

1.
To speak in defense against; to reply to in defense; as, to answer a charge; to answer an accusation.
2.
To speak or write in return to, as in return to a call or question, or to a speech, declaration, argument, or the like; to reply to (a question, remark, etc.); to respond to.
She answers him as if she knew his mind. — Shakespeare
So spake the apostate angel, though in pain:... And him thus answered soon his bold compeer. — Milton
3.
To respond to satisfactorily; to meet successfully by way of explanation, argument, or justification, and the like; to refute.
No man was able to answer him a word. — Matt. xxii. 46
These shifts refuted, answer thine appellant. — Milton
The reasoning was not and could not be answered. — Macaulay
4.
To be or act in return or response to.
(a)
To be or act in compliance with, in fulfillment or satisfaction of, as an order, obligation, demand; as, he answered my claim upon him; the servant answered the bell.
This proud king... studies day and night To answer all the debts he owes unto you. — Shakespeare
(b)
To render account to or for.
I will... send him to answer thee. — Shakespeare
(c)
To atone; to be punished for.
And grievously hath Cazar answered it. — Shakespeare
(d)
To be opposite to; to face.
The windows answering each other, we could just discern the glowing horizon them. — Gilpin
(e)
To be or act an equivalent to, or as adequate or sufficient for; to serve for; to repay. [Rare]
Money answereth all things. — Eccles. x. 19
(f)
To be or act in accommodation, conformity, relation, or proportion to; to correspond to; to suit.
Weapons must needs be dangerous things, if they answered the bulk of so prodigious a person. — Swift

Answer , intransitive verb

1.
To speak or write by way of return (originally, to a charge), or in reply; to make response.
There was no voice, nor any that answered. — 1 Kings xviii. 26
2.
To make a satisfactory response or return.
To render account, or to be responsible; to be accountable; to make amends; as, the man must answer to his employer for the money intrusted to his care.
Let his neck answer for it, if there is any martial law. — Shakespeare
3.
To be or act in return.
(a)
To be or act by way of compliance, fulfillment, reciprocation, or satisfaction; to serve the purpose; as, gypsum answers as a manure on some soils.
Do the strings answer to thy noble hand? — Dryden
(b)
To be opposite, or to act in opposition.
(c)
To be or act as an equivalent, or as adequate or sufficient; as, a very few will answer.
(d)
To be or act in conformity, or by way of accommodation, correspondence, relation, or proportion; to conform; to correspond; to suit; -- usually with to.
That the time may have all shadow and silence in it, and the place answer to convenience. — Shakespeare
If this but answer to my just belief, I 'll remember you. — Shakespeare
As in water face answereth to face, so the heart of man to man. — Bible (KJV) - Proverb xxvii. 19

Answer , noun

[Old English andsware, Anglo-Saxon andswaru; and against + swerian to swear. r177, 196. See Anti-, and Swear, and compare 1st un-.]

1.
A reply to a charge; a defense.
At my first answer no man stood with me. — 2 Tim. iv. 16
2.
Something said or written in reply to a question, a call, an argument, an address, or the like; a reply.
A soft answer turneth away wrath. — Bible (KJV) - Proverb xv. 1
I called him, but he gave me no answer. — Cant. v. 6
3.
Something done in return for, or in consequence of, something else; a responsive action.
Great the slaughter is Here made by the Roman; great the answer be Britons must take. — Shakespeare
4.
A solution, the result of a mathematical operation; as, the answer to a problem.
5.
(Law) A counter-statement of facts in a course of pleadings; a confutation of what the other party has alleged; a responsive declaration by a witness in reply to a question. In Equity, it is the usual form of defense to the complainant's charges in his bill. — Bouvier