alternates

Noun

• someone who takes the place of another person
• plural of alternate

Verb

• go back and forth; swing back and forth between two states or conditions
• exchange people temporarily to fulfill certain jobs and functions
• be an understudy or alternate for a role
• reverse (a direction, attitude, or course of action)
• do something in turns
• third-person singular simple present indicative of alternate

Synonyms

alternate, flip, flip-flop, interchange, jump, replacement, surrogate, switch, tack, take turns, understudy