fluctuate
/ˈflʌkt͡ʃu.eɪt/ verb, adjective
Forms fluctuates fluctuating fluctuated
- verb (intransitive) To vary irregularly; to swing.
- verb (intransitive) To undulate.
- verb (intransitive) To be irresolute; to waver. “I fluctuated between wishing he was back home and wishing I'd never met him.”
- verb (transitive) To cause to vary irregularly.
- verb (rare, figuratively, also literally) To rise and fall as a wave; to be tossed up and down the waves.
- adjective Tossed up and down the waves.
- adjective (by extension) Wavering, fickle.
Synonyms
Etymology
First attested in 1630; borrowed from Latin flūctuātus, perfect passive participle of flūctuō (“(of the sea) to surge, swell; (of man) to waver, fluctuate”), see -ate (verb-forming suffix) and -ate (adjective-forming suffix).
Webster’s 1913
- verb To move as a wave; to roll hither and thither; to wave; to float backward and forward, as on waves; as, a fluctuating field of air. Blackmore.
- verb To move now in one direction and now in another; to be wavering or unsteady; to be irresolute or undetermined; to vacillate.
- verb To cause to move as a wave; to put in motion. [R.]
Etymology [L. fluctuatus, p.p. of fluctuare, to wave, fr. fluctus wave, fr. fluere, fluctum, to flow. See Fluent, and cf. Flotilla.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “fluctuate”, CC BY-SA 4.0. Details