Definition of fluctuate
1 : to shift back and forth uncertainly Oil prices fluctuated. Temperatures fluctuated.
2 : to rise and fall in or as if in waves The boat fluctuated on the rough sea.
: to cause to fluctuate
fluctuationplay \ˌflək-chə-ˈwā-shən, -chü-ˈā-\ noun
fluctuationalplay \ˌflək-chə-ˈwā-shnəl, -shə-nəl, -chü-ˈā-\ adjective
Examples of fluctuate in a sentence
His popularity has fluctuated during his term in office.
In the desert, the temperature fluctuates dramatically.
Origin and Etymology of fluctuate
Latin fluctuatus, past participle of fluctuare, from fluctus flow, wave, from fluere — more at fluid
First Known Use: 1604
Synonym Discussion of fluctuate
FLUCTUATE Defined for English Language Learners
Definition of fluctuate for English Language Learners
: to change level, strength, or value frequently
FLUCTUATE Defined for Kids
Definition of fluctuate for Students
: to change continually and especially up and down The temperature fluctuated.
Seen and Heard
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