Answer: SINUOUS

AnswerCrossword Clue
SINUOUSLike mountain roads
SINUOUSUndulating
SINUOUSWinding
SINUOUSWinding in and out.
SINUOUSMaking waves?
SINUOUSCurvy
sinuouscharacterized by curves, bends or turns, also SINUOSE
sinuouswinding