Back up synonyms | adjectives

Synonyms for Back up as an Adjective

• support
• back down
• second
• substitute
• supporting
• alternate
• auxiliary
• other
• different
• surrogate
• another
• flipside
• other side
• supplementary
• secondary
• assisting
• ancillary
• accessory
• adjuvant
• backup
• complementary
• extra
• reserve
• spare
• subordinate
• subsidiary
• abetting
• appurtenant
• contributory
• subservient
• retreating