Having curves:
— He hated the sinuosity of mountain roads.

synonym: sinuousness.

Roget 245: curvature, curvity^†, curvation^†; incurvature^†, incurvity^†; incurvation^†; bend; flexure, flexion, flection^†; conflexure^†; crook, hook, bought, bending; deflection, deflexion^†; inflection, inflexion^†; concameration^†; arcuation^†, devexity^†, turn, deviation, detour, sweep; curl, curling; bough; recurvity^†, recurvation^†; sinuosity etc. 248.    kink.    carve, arc, arch, arcade, vault, bow, crescent, half-moon, lunule^†, horseshoe, loop, crane neck; parabola, hyperbola; helix, spiral; catenary^†, festoon; conchoid^†, cardioid; caustic; tracery; arched ceiling, arched roof; bay window, bow window.    sine curve; spline, spline curve, spline function; obliquity etc. 217.    ... show more

Roget 248: winding etc. v.; convolution, involution, circumvolution; wave, undulation, tortuosity, anfractuosity^†; sinuosity, sinuation^†; meandering, circuit, circumbendibus^†, twist, twirl, windings and turnings, ambages^†; torsion; inosculation^†; reticulation etc. (crossing) 219; rivulation^†; roughness etc. 256.    coil, roll, curl; buckle, spiral, helix, corkscrew, worm, volute, rundle; tendril; scollop^†, scallop, escalop^†; kink; ammonite, snakestone^†.    serpent, eel, maze, labyrinth.    knot.    ... show more