Waver, waffle, change.
The word meaning without change is "constant." It refers to something that remains the same over time and does not vary or fluctuate.
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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.
The word fluctuate is a verb meaning to continually change, to shift back and forth, to vary irregularly, to move back and forth in waves. Example sentence: The price of gold may fluctuate, but it will always go up eventually.
The homograph of "close" is "close." It can be pronounced with a long "o" sound (klohz) meaning to shut, or with a silent "s" (klohs) meaning near or intimate.
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This is likely the term "I close" meaning to shut. (pronounced clohz)The word close can also be an adjective (clohs) meaning nearby.
Interrupt does not have a precise opposite, but the word listen comes close.
bide
inspire; appealing; accelerate; upset
The Latin word for bold is audax. Confident is close in meaning and the Latin word for it is confidens.
Close has changed its meaning over the years as it was processed from Old French then English via Latin. Close in its adjective form changed from its original meaning in Old French of secret or strictly confined to the Latin interpretation meaning near.