'back up' definitions:
Definition of 'back up'
From: WordNet
verb
Give moral or psychological support, aid, or courage to; "She supported him during the illness"; "Her children always backed her up" [syn: support, back up]
verb
Move backwards from a certain position; "The bully had to back down" [syn: back up, back off, back down]
verb
Establish as valid or genuine; "Can you back up your claims?" [syn: back, back up]
verb
Make a copy of (a computer file) especially for storage in another place as a security copy; "You'd better back up these files!"
verb
Definition of 'back up'
From: GCIDE
- back up \back" up\, v. i.
- 1. to move in a reverse direction; -- used of vehicles or animals. [PJC]
- 2. to accumulate due to a blockage of flow; as, a traffic backup due to an accident; a sewage backup. [PJC]
Definition of 'back up'
From: GCIDE
- back up \back" up\, v. t.
- 1. to serve as a backup[3] for (another person or persons); as, the patrolmen backed up the detectives as they went inside to make the arrest; the center fielder backed up the shortstop on the play. [PJC]
- 2. (Computers) to make a backup[5] of; as, the sysop backed up the purchasing data files every night. [PJC]
Synonyms of 'back up'
From: Moby Thesaurus
- act for,
- advance,
- affirm,
- afford support,
- answer for,
- appear for,
- ascend,
- attest,
- authenticate,
- back,
- back away,
- back off,
- backpedal,
- backtrack,
- backtrail,
- backwater,
- bear,
- bear out,
- bear up,
- bolster,
- bolster up,
- brace,
- budge,
- buoy up,
- buttress,
- carry,
- certify,
- champion,
- change,
- change place,
- circle,
- circumstantiate,
- climb,
- come after,
- come last,
- commission,
- confirm,
- corroborate,
- countermarch,
- cradle,
- crutch,
- cushion,
- deputize,
- descend,
- document,
- ebb,
- elect,
- endorse,
- fall astern,
- fall back,
- fall behind,
- flow,
- follow,
- fortify,
- front for,
- get behind,
- get in behind,
- get over,
- give support,
- go,
- go around,
- go back,
- go backwards,
- go into reverse,
- go round,
- go sideways,
- gyrate,
- hold,
- hold up,
- keep afloat,
- keep up,
- lag behind,
- lend support,
- mainstay,
- maintain,
- make sternway,
- mount,
- move,
- move over,
- nominate,
- pillow,
- pinch-hit for,
- plunge,
- probate,
- progress,
- prop,
- prove,
- ratify,
- regress,
- reinforce,
- represent,
- retrogress,
- reverse,
- revert,
- rise,
- rotate,
- run,
- run interference for,
- second,
- shift,
- shore,
- shore up,
- shoulder,
- side with,
- sink,
- soar,
- speak for,
- spin,
- stand back of,
- stand behind,
- stand by,
- stand in for,
- stay,
- stick by,
- stick up for,
- stir,
- stream,
- strengthen,
- subside,
- subsidize,
- substantiate,
- substitute for,
- subvention,
- support,
- sustain,
- take sides with,
- trail,
- trail behind,
- travel,
- underbrace,
- undergird,
- underlie,
- underpin,
- underset,
- understudy,
- upbear,
- uphold,
- upkeep,
- validate,
- verify,
- vote,
- wane,
- warrant,
- whirl
Words containing 'back up'
- Back,
- Backed,
- Backing,
- Backs,
- To back down,
- To back out,
- To back up,
- back down,
- back off,
- back out,
- back to back,
- back-to-back,
- Back Mountain,
- Back and forth,
- Back blocks,
- Back charge,
- Back charges,
- Back door,
- Back eccentric,
- Back filling,
- Back pressure,
- Back rest,
- Back slang,
- Back stairs,
- Back step,
- Back stream,
- Full back,
- Half back,
- Hark back,
- Hop back,
- Jack back,
- Paneled back,
- Pump Back,
- Quarter back,
- Skew back,
- Snap back,
- Spring back,
- Switch back,
- Throw back,
- To back a rope,
- To back a warrant,
- To back against the field,
- To back an anchor,
- To back and fill,
- To back the field,
- To back the oars,
- To back the sails,
- To back water,
- To be on one's back,
- To bear back,
- To break the back,
- To bring back,
- To call back,
- To draw back,
- To fall back,
- To fall back on,
- To get back,
- To give back,
- To go back on,
- To hang back,
- To hark back,
- To keep back,
- To put back,
- To see the back of,
- To snap back,
- To throw back,
- To turn back,
- To turn the back,
- To turn the back on,
- Wash back,
- Water back,
- Watteau back,
- Window back,
- answer back,
- back and fill,
- back away,
- back brace,
- back breaker,
- back burner,
- back channel,
- back circle,
- back country,
- back end,
- back entrance,
- back exercise,
- back fire,
- back judge,
- back matter,
- back number,
- back of beyond,
- back pack,
- back porch,
- back room,
- back saw,
- back scratching,
- back seat,
- back spread,
- back street,
- back talk,
- back tooth,
- back way,
- beat back,
- bounce back,
- bring back,
- buy back,
- call back,
- carry back,
- ceding back,
- choke back,
- come back,
- come back at,
- coming back,
- cut back,
- date back,
- die back,
- double back,
- draw back,
- drive back,
- drop back,
- fall back,
- fat back,
- feed back,
- fight back,
- financial backing,
- flanker back,
- flash back,
- force back,
- from way back,
- get back,
- get back at,
- give back,
- go back,
- go back on,
- go back over,
- hang back,
- hold back,
- keep back,
- kick back,
- knock back,
- lean back,
- look back,
- move back,
- pat on the back,
- pay back,
- paying back,
- play back,
- pull back,
- push back,
- put back,
- rear back,
- relation back,
- roll back,
- running back,
- send back,
- set back,
- shrink back,
- sink back,
- sit back,
- slide back,
- slip back,
- stand back,
- strike back,
- take back,
- talk back,
- think back,
- thrust back,
- toss back,
- trim back,
- turn back,
- win back,
- Back Mountain, PA,
- Back-fire,
- Back-firing,
- Behind one's back,
- Broken-backed,
- Bunch-backed,
- Camel-backed,
- Diamond-back,
- Hog's-back,
- Huckle-backed,
- Lute-backed,
- Pump Back, OK,
- Razor-backed,
- Roach-backed,
- Round-backed,
- Saddle-backed,
- Stiff-backed,
- Sway-backed,
- To claw one on the back,
- To fall back upon,
- To lie on one's back,
- To put one's back up,
- To take the back track,
- To turn the back on one,
- To turn the back upon,
- Warty-back,
- back-and-forth,
- back-blast,
- back-channel,
- back-formation,
- back-geared,
- back-number,
- break one's back,
- call-back,
- dust-back,
- high-backed,
- hollow-back,
- ladder-back,
- ladder-backed,
- laid-back,
- lobster-backed,
- low-backed,
- move back and forth,
- pig-a-back,
- set-back,
- spiny-backed,
- straight-backed,
- to get one's back up,
- Mackerel-back sky,
- black-backed gull,
- blue-back mullet,
- broken-backed hogged,
- dust-back pitch,
- ladder-back chair,
- leather-backed tortoise,
- mortgage-backed security,
- paper-back book,
- red-backed lemming,
- red-backed mouse,
- red-backed sandpiper,
- Back-acting steam engine,
- Back-action steam engine,
- eastern red-backed salamander,
- great black-backed gull,
- western red-backed salamander,
- red-coated lobster-backed,
- arduous backbreaking back-breaking grueling gruelling hard heavy laborious labourious punishing slavish strenuous toilsome