Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun back_up

5 senses of backup

Sense 1
backup -- (an accumulation caused by clogging or a stoppage; "a traffic backup on the main street"; "he discovered a backup in the toilet")
       => accretion, accumulation -- (an increase by natural growth or addition)

Sense 2
stand-in, substitute, relief, reliever, backup, backup man, fill-in -- (someone who takes the place of another (as when things get dangerous or difficult); "the star had a stand-in for dangerous scenes"; "we need extra employees for summer fill-ins")
       => peer, equal, match, compeer -- (a person who is of equal standing with another in a group)

Sense 3
accompaniment, musical accompaniment, backup, support -- (a musical part (vocal or instrumental) that supports or provides background for other musical parts)
       => part, voice -- (the melody carried by a particular voice or instrument in polyphonic music; "he tried to sing the tenor part")

Sense 4
backup, computer backup -- ((computer science) a copy of a file or directory on a separate storage device; "he made a backup in case the original was accidentally damaged or erased")
       => duplicate, duplication -- (a copy that corresponds to an original exactly; "he made a duplicate for the files")

Sense 5
backing, backup, championship, patronage -- (the act of providing approval and support; "his vigorous backing of the conservatives got him in trouble with progressives")
       => blessing, approval, approving -- (the formal act of approving; "he gave the project his blessing"; "his decision merited the approval of any sensible person")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb back_up

5 senses of back up

Sense 1
support, back up -- (give moral or psychological support, aid, or courage to; "She supported him during the illness"; "Her children always backed her up")

Sense 2
back up, back off, back down -- (move backwards from a certain position; "The bully had to back down")
       => withdraw, retreat, pull away, draw back, recede, pull back, retire, move back -- (pull back or move away or backward; "The enemy withdrew"; "The limo pulled away from the curb")

Sense 3
back, back up -- (establish as valid or genuine; "Can you back up your claims?")
       => confirm, corroborate, sustain, substantiate, support, affirm -- (establish or strengthen as with new evidence or facts; "his story confirmed my doubts"; "The evidence supports the defendant")

Sense 4
back up -- (make a copy of (a computer file) especially for storage in another place as a security copy; "You'd better back up these files!")
       => copy, re-create -- (make a replica of; "copy that drawing"; "re-create a picture by Rembrandt")

Sense 5
clog, choke off, clog up, back up, congest, choke, foul -- (become or cause to become obstructed; "The leaves clog our drains in the Fall"; "The water pipe is backed up")
       => obstruct, obturate, impede, occlude, jam, block, close up -- (block passage through; "obstruct the path")