inflectional
/ɪnˈflɛkʃənl/
What does "inflectional" mean?
曲折的The inflectional endings of nouns in English are usually -s or -es.
英语中名词的曲折后缀通常是-s或-es。
How to use "inflectional" correctly?
正式
（语法）曲折的；屈折的（表示词形变化的）
Inflectional morphology is the study of how words change form to indicate grammatical function.
曲折形态学是研究词语如何变形以表示语法功能的。
词源
From 'inflection', which comes from Latin 'inflectere', meaning 'to bend' or 'to turn'.
英汉词典