noun
auxiliary, reinforcement, alternate, reserve; see substitute.
See backup in Webster's New World Roget's A-Z Thesaurus II
Used or held in reserve:
Learn more about backup
» backup computer definition
» backup sentence examples
Also Mentioned In
» dedicated circuit
» dump
» geek
» generator
» off-site
» pack
» pertinent
» power failure transfer
» quarterback
» Recovery or Disaster Recovery
» more results...
Browse entries near backup
backswing
backsword
backtrack
backtrack (synonyms)
backup
backup (computer)
backup & recovery
backup ball
backup copy
backup device