Antonyms of noun curliness

1 sense of curliness

Sense 1
curliness, waviness -- ((of hair) a tendency to curl)
       Antonym of straightness (Sense 1)
      => straightness -- ((of hair) lack of a tendency to curl)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun curliness

1 sense of curliness

Sense 1
curliness, waviness -- ((of hair) a tendency to curl)
       => curvature, curve -- (the property possessed by the curving of a line or surface)