back up
Go in reverse
Back up means to move in reverse: Back up a few feet so I can open the gate.
It extends to supporting or reinforcing: I'll back you up if anyone asks.
To back up data is to make a copy for safekeeping.
Things back up when they accumulate or become congested: Traffic backed up for miles.
As a noun or adjective, backup refers to a reserve or substitute: backup plan, backup singer.
Validate as true
- corroborateConfirm with supporting evidence
- validateConfirm as true
- substantiateProve something is true
- vouch forAffirm someone's trustworthiness
verify · endorse · defend · stand by · second · advocate · bolster · affirm
Exact replica of original
- replicateCopy exactly
- cloneGenetically identical organism
- saveProtect from loss
- archiveStored historical records
restore · sync · storage · cloud · drive · server · redundancy · snapshot
Sanctuary or withdrawal
- rewindReturn to beginning
- backtrackReverse one's position
- recedeMove back from
- withdrawRemove or pull away
retrace · beep · parking · rearview · maneuver · trailer · driveway · reverse gear
Movement along routes
- congestionExcessive accumulation causing blockage
- gridlockComplete mutual obstruction
- bottleneckConstriction limiting throughput
- jamCooked fruit spread
clog · block · standstill · delay · queue · logjam · snarl · tailback
Held in reserve
- contingencyUncertain possible event
- substituteReplacement for another
- standbyReady substitute awaiting use
- alternateOccur in succession
fallback · replacement · bench · understudy · secondary · auxiliary · plan B · pinch-hit
confirm
Validate as true
- corroborateConfirm with supporting evidence
- validateConfirm as true
- substantiateProve something is true
vouch for · verify · endorse · defend · stand by · second · advocate · bolster · affirm · attest
duplicate
Exact replica of original
archive · restore · sync · storage · cloud · drive · server · redundancy · snapshot · mirror
retreat
Sanctuary or withdrawal
withdraw · retrace · beep · parking · rearview · maneuver · trailer · driveway · reverse gear · backing
traffic
Movement along routes
- congestionExcessive accumulation causing blockage
- gridlockComplete mutual obstruction
- bottleneckConstriction limiting throughput
jam · clog · block · standstill · delay · queue · logjam · snarl · tailback · holdup
spare
Held in reserve
- contingencyUncertain possible event
- substituteReplacement for another
- standbyReady substitute awaiting use
alternate · fallback · replacement · bench · understudy · secondary · auxiliary · plan B · pinch-hit · relief
- empowerment verbsencourage, uplift, support, inspire, enable
- phrasal verbslook at, put down, turn on, turn off, wait for
- retreatwithdrawal, retreating, backing away, backing off, withdraw
- dog sportsagility trials, obedience trials, teeter, tunnels, jumps
- helpingaid, assist, give a hand, help, helping hand
- directionsnorth, south, east, west, left
back upmove forward
Travel in intended direction
advance · proceed · move ahead · push ahead · forge ahead