alternate

Meanings

• someone who takes the place of another person
• 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
• every second one of a series; ; - the White Queen
  • "the cleaning lady comes on alternate Wednesdays"
• serving or used in place of another
• occurring by turns; first one and then the other
• of leaves and branches etc; first on one side and then on the other in two ranks along an axis; not paired
  • "stems with alternate leaves"

Synonyms

alternating, alternative, flip, flip-flop, interchange, jump, replacement, substitute, surrogate, switch, tack, take turns, understudy