"alternating" in the verb sense
1. alternate, jump
go back and forth swing back and forth between two states or conditions
2. alternate
exchange people temporarily to fulfill certain jobs and functions
3. understudy, alternate
be an understudy or alternate for a role
4. interchange, tack, switch, alternate, flip, flip-flop
reverse (a direction, attitude, or course of action)
5. alternate, take turns
do something in turns
"We take turns on the night shift"
"alternating" in the adjective sense
1. alternating
of a current) reversing direction
"alternating current"
2. alternate, alternating
occurring by turns first one and then the other
"alternating feelings of love and hate"
Source: WordNet® (An amazing lexical database of English)
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