ur mom
vary in level, degree, or value: to change often from high to low levels or from one thing to another in an unpredictable way
The English word 'fluctuate' has a few different meanings: 1: cause to fluctuate or move in a wavelike pattern; 2: be unstable; 3: move or sway in a rising and falling or wavelike pattern
It means to change frequently and erratically.
Alternate, vacillate, oscillate, waver, etc.
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