un·du·late
Function: verb
Inflected Form(s): un·du·lat·ed; un·du·lat·ing
Etymology: Late Latin undula small wave, from Latin *undula
Date: 1664
intransitive verb
1 : to form or move in waves : fluctuate
2 : to rise and fall in volume, pitch, or cadence
3 : to present a wavy appearance
transitive verb
: to cause to move in a wavy, sinuous, or flowing manner