in ‧ flec ‧ tion BrE AmE , inflexion /ɪnˈflekʃ ə n/ noun
1 . [uncountable] technical the way in which a word changes its form to show a difference in its meaning or use
2 . [countable] technical one of the forms of a word that changes in this way, or one of the parts that is added to it
3 . [uncountable and countable] the way the sound of your voice goes up and down when you are speaking
—inflectional adjective