What is the Latin word for inflection?

The usual Latin words for “inflection” are īnflexiō, īnflectō, flectō. The right choice depends on the sense; see the distinctions below.

English → Latin

“inflection” in Latin

īnflexiōbending, curving; modification, adaptation īnflectōto bend, curve, bow; to turn aside; to alter, influence, affect flectōto bend, curve or bow; to deviate, distract; to turn or curl

The English word inflection itself goes back to Latin flectō, through inflexio.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

inflection

inflexio (Cic.): inflexus, -ūs (post- Augustin, Sen., Juv.).

Declination, etc., flexura (Varr., L.L., 10, 2, 166).

Quick answer

What is the Latin word for inflection?: The usual Latin words for “inflection” are īnflexiō, īnflectō, flectō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.