RichThesaurus
alternate
alternate
synonyms
substitute
fluctuate
interchange
backup
oscillate
surrogate
vary
yo-yo
swing
switch
waver
replacement
change
alternative
shift
proxy
sway
vacillate
see-saw
stand-in
blow hot and cold
deputy
reserve
tack
auxiliary
alter
veer
flip-flop
swap
another
relief
second
teeter
exchange
convert
fallback
wobble
take turns
flip
hesitate
rotate
commute
fill-in
go from one extreme to the other
extra
makeshift
seesaw
transpose
hover
temporary
more synonyms
alternate
antonyms
remain
stay
permanent
primary
continue
hold
regular
persist
principal
opposite
continual
constant
keep
first-rate
be steady
go ahead
paired
real
important
prevented
irregular
necessary
carry on
main
stopped
superior
connected
necessity
perpetual
continuous
variable
first-class
continuing
unbroken
lasting
persevere
attack
contiguous
keep
go
halted