Sigmoid and Straight

Opposite meaning words

Sigmoid adjective - Curved in two directions (like the letter S).

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Straight is an antonym for sigmoid in bowed topic.

Straight adjective - Free from irregularities or digressions in course.

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Sigmoid is an antonym for straight.

Cite this Source

Straight and Sigmoid. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/sigmoid/straight

Sigmoid & Straight. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/sigmoid/straight>.

Straight or Sigmoid. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/sigmoid/straight.

Google Ngram Viewer shows how "sigmoid" and "straight" have occurred on timeline