a snappy come-back

a Determinative

— A is used when the following word could be any of a certain type. Compare "A book I saw on the shelf" and "The book I gave you yesterday".

a Noun

— A is the first letter of the alphabet. The letter "a" comes before "b". — In some schools, an A is a very high grade. Ron got an A on his earth science test.

snappy

— adjective (= snappish) apt to speak irritably a snappish tone of voice — adjective (= whipping) smart and fashionable snappy conversation some sharp and whipping lines — adjective (= crisp, frosty, nipping, nippy) pleasantly cold and invigorating crisp clear nights and frosty mornings a nipping wind a nippy fall day snappy weather — adjective (= brisk, lively, merry, rattling, spanking) quick and energetic a brisk walk in the park a lively gait a merry chase traveling at a rattling rate a snappy pace a spanking breeze — adjective (= dapper, jaunty) marked by up-to-dateness in dress and manners a dapper young man a jaunty red hat

come Verb

— To move towards a place or into a place; to move to the place where the person who is talking is. Come to my house and I will give you something to eat. Come here to me. Twenty people came to the party. He came here, but he went away again before you came here.

come Preposition

— When something happens or arrives. We'll talk again come January.

come Noun

— .

back Preposition

— Toward the rear. He went back behind the stands. — To a place again. I didn't like it, so I sent it back. He went back to the same house. They came back again.

back Noun

— The back is the rear part of something; it is the part in the other direction from the front. I went to the back of the house. — The back is the rear part of the human body. He had a scar on his back.

back Verb

— If you back something, you support it. The Republicans backed the bill. — If you back up, you move backward. He put the car in gear and backed right into the garage door.