Flail
Flail verb - To move or cause to move with a striking motion.
Usage example: started to flail his arms wildly when he spied a bat in the house
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Synonyms for Flail
Undulate and flail are semantically related. In some cases you can use "Undulate" instead a verb "Flail".
Undulate
Undulate verb - Move in a wavy pattern or with a rising and falling motion.
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Synonyms for Undulate
Flail and undulate are semantically related. Sometimes you can use "Flail" instead a verb "Undulate".
Cite this Source
Undulate and Flail. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/flail/undulate
Flail & Undulate. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/flail/undulate>.
Undulate or Flail. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/flail/undulate.
Google Ngram Viewer shows how "flail" and "undulate" have occurred on timeline