Simple past tense and past participle of fluctuate.(verb)
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Use "fluctuated" in a sentence
"Food became a little more plentiful and fluctuated from the earlier diet of one bowl of rice and a cup of water to three or four bowls of rice a day."
"186 Theodemir and his subjects were treated with uncommon lenity; but the rate of tribute appears to have fluctuated from a tenth to a fifth, according to the submission or obstinacy of the Christians."
"Form and fitness have fluctuated for many at this club over Villas-Boas's tenure to date but the manager has been denied Essien's presence throughout."