sin ‧ u ‧ ous /ˈsɪnjuəs/ BrE AmE adjective
[ Date: 1500-1600 ; Language: Latin ; Origin: sinuosus , from sinus ; ⇨ ↑ sinus ]
1 . moving with smooth twists and turns, like a snake:
the sinuous grace of a cat
2 . with many smooth twists and turns:
They followed the sinuous trail deep into the mountains.
—sinuously adverb