onduler înseamnă în Engleză

wave [waved, waving, waves]▼◼◼◼(to have an undulating or wavy form)
verb
[UK: weɪv] [US: ˈweɪv]

undulate [undulated, undulating, undulates]▼◼◼◼(intransitive: move in wavelike motions)
verb
[UK: ˈʌn.djʊ.leɪt] [US: ˈʌn.dʒə.ˌlet]Mary undulates her hips to attract the lustful gaze of men. = Marie ondule des hanches pour attirer le regard concupiscent des hommes.

ripple [rippled, rippling, ripples]▼◼◼◼(to move like the undulating surface of a body of water)
verb
[UK: ˈrɪp.l̩] [US: ˈrɪp.l̩]

fluctuate [fluctuated, fluctuating, fluctuates]▼(to undulate)
verb
[UK: ˈflʌk.tʃʊeɪt] [US: ˈflʌk.tʃə.ˌwet]