act,
move behave in a certain manner; show a certain behavior; conduct or comport oneself; "You should act like an adult"; "Don't behave like a fool"; "What makes her do this way?"; "The dog acts ferocious, but he is really afraid of people"
spell take turns working; "the workers spell every four hours"
alternate -
exchange people temporarily to fulfill certain jobs and functions
exchange give to, and receive from, one another; "Would you change places with me?"; "We have been exchanging letters for a year"
rotate plant or grow in a fixed cyclic order of succession; "We rotate the crops so as to maximize the use of the soil"
alternate -
go back and forth; swing back and forth between two states or conditions
change by reversal,
reverse,
turn change to the contrary; "The trend was reversed"; "the tides turned against him"; "public opinion turned when it was revealed that the president had an affair with a White House intern"
Alternate -
be an understudy or alternate for a role
Alternate -
Being or succeeding by turns; one following the other in succession of time or place; by turns first one and then the other; hence, reciprocal.
Alternate -
Designating the members in a series, which regularly intervene between the members of another series, as the odd or even numbers of the numerals; every other; every second.