Synonyms of sigmoid

1 Syllable

round

2 Syllables

curved, compass, crooked, sinuous, curly, sweeping, arched, swirly, turned, rounded, twisting, humped, skewed, twisty, loopy, arced, twisted, wreathed, looped, swirlier, snaky

3 Syllables

incurved, circular, curvaceous, s-shaped, arrondi, enbowed, biflected, arciform

4 Syllables

elliptical, declinate, incurvate, serpentine, curvilinear