v. 25B6; verb VARY, change, differ, shift, alter, waver, swing, oscillate, alternate, rise and fall, go up and down, see-saw, yo-yo, be unstable.
FLUCTUATE
Meaning of FLUCTUATE in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012