(פ') להתנדנד, לעלות ולרדת חליפות, להיות לא יציב

v. vacillate, waver, vary, change

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Verb
1. cause to fluctuate or move in a wave-like pattern
(hypernym) move, displace
(verb-group) vacillate, waver
(derivation) fluctuation
2. move or sway in a rising and falling or wavelike pattern; "the line on the monitor vacillated"
(synonym) vacillate, waver
(hypernym) swing
(derivation) fluctuation
3. be unstable; have ups and downs; "The stock market fluctuates"
(hypernym) change state, turn
(derivation) fluctuation, wavering

v. kolísat

Czas. wahać się (między czymś i czymś); zmieniać się

(v.) = ebb and flow ; fluctuate ; vacillate ; oscillate.
Ex: The importance of the practicum in the curriculum has ebbed and flowed tremendously throughout the history of library education.
Ex: The exchange rate is likely to fluctuate in unpredictable ways.
Ex: Australia's treatment of information technology has vacillated between laissez faire and an interventionist strategy.
Ex: This dichotomy in Muslim history, which has oscillated between periods of piousness & decadence, demonstrates further disunity in the Muslim world.