having many curves and turns

कुंडलाकार

English Usage: The river took a sinuous path through the valley.

Hindi Usage: नदी ने घाटी में कुंडलाकार रास्ता लिया।

winding or curvy in shape

घुमावदार

English Usage: The sinuous trail led us deeper into the woods.

Hindi Usage: घुमावदार रास्ता हमें जंगल के गहरे हिस्से में ले गया।