To vary, to vacillate,
to float.
boo
boo
Fluctuate.
A word meaning to work closely with someone is collaborate.
A closely related word to obsequious would be compliant or enslaved.
The word 'fluctuate' is a verb (fluctuate, fluctuates, fluctuating, fluctuated), a word meaning to vary irregularly.Example uses:The financial scare caused the prices to fluctuatewildly.The market's stocks have been fluctuating since 2009.Gas prices fluctuate with the price of oil.My heart's rhythm always seemed to fluctuate wildly when she entered the room.This time of year, the temperature will fluctuate as much as thirty degrees in a day.In the desert, the temperature might fluctuate dramatically from time to time.My weight tends to fluctuate.
Remain steady, stay the same, keep on an even course.Hold, persist, remain, stay...
Waver, waffle, change.
Vary, change, differ, shift, alter, waver, swing, oscillate, alternate, seesaw, yo-yo.
Closely
Some closely related words to the word entail are: - Involve - Require - Include
Constant, didn't fluctuate, monotonous.