Incurvating has become a rare word and is not often used in conversation or in writing. However, there are many synonyms for the word that can be used interchangeably. Some of the closest synonyms include bend, curve, flex, arc, and bow. Other synonyms include arch, contort, twist, wind, and wriggle. Each synonym has its own nuances, with some emphasizing a more subtle or gradual curve while others suggest a sharper or more dramatic bend. When looking for alternative words to use, it is important to consider the specific context and intended tone of the text in order to choose the most appropriate synonym.