1) Arced 2) Arched 3) Arching 4) Arciform 5) Arcuate 6) Bent 7) Bowed 8) Convex 9) Curvey 10) Curvilineal 11) Curvilinear 12) Curving 13) Curvy 14) Deformed 15) Eellike 16) Falcate 17) Falciform 18) Flexuous 19) Hooked 20) Hooklike 21) Hunched 22) Incurvate 23) Incurved 24) Like a boomerang 25) Like a winding road 
• (imp. & p. p.) of Curve
[adj] - not straight
curving adjective having or marked by a curve or smoothly rounded bend; `the curved tusks of a walrus`; `his curved lips suggested a smile but his eyes were hard`