undulant (adj.)

• alternate
• bent
• billowing
• billowy
• circling
• curvaceous
• curvate
• curved
• curvilineal
• curvilinear
• curving
• curvy
• cyclic
• epochal
• even
• incurvate
• incurved
• intermittent
• isochronal
• labyrinthine
• mazy
• meandering
• measured
• oscillatory
• periodical
• reciprocal
• recurrent
• recurring
• recurvate
• recurved
• rhythmic
• rolling
• rotary
• seasonal
• serial
• serpentine
• sinuous
• steady
• tortuous
• undulate
• undulatory
• wavelike
• waving
• wavy
• wheeling