ondeggiare bedeutet auf Englisch

bob [bobbed, bobbing, bobs]▼(move vertically at surface of water)
verb
[UK: bɒb] [US: ˈbɑːb]

flutter [fluttered, fluttering, flutters]▼(to flap or wave quickly)
verb
[UK: ˈflʌ.tə(r)] [US: ˈflʌ.tər]

rock [rocked, rocking, rocks]▼(move gently back and forth)
verb
[UK: rɒk] [US: ˈrɑːk]

sway [swayed, swaying, sways]▼(to move or swing from side to side; or backward and forward; to rock)
verb
[UK: sweɪ] [US: ˈsweɪ]The hammock swayed gently. = L'amaca ondeggiava dolcemente.

swing [swung, swung, swinging, swings]▼(to rotate about an off-centre fixed point)
verb
[UK: swɪŋ] [US: ˈswɪŋ]

vacillate [vacillated, vacillating, vacillates]▼(to sway unsteadily from one side to the other)
verb
[UK: ˈvæ.sɪ.leɪt] [US: ˈvæ.sə.ˌlet]

waive [waived, waiving, waives]▼(to sway)
verb
[UK: weɪv] [US: ˈweɪv]

wave [waved, waving, waves]▼(to move back and forth repeatedly)
verb
[UK: weɪv] [US: ˈweɪv]