inflection

The act of inflecting or the state of being inflected.

Alteration in pitch or tone of the voice.

An alteration of the form of a word by the addition of an affix, as in English dogs from dog, or by changing the form of a base, as in English spoke from speak, that indicates grammatical features such as number, person, mood, or tense.

An affix indicating such a grammatical feature, as the –s in the English third person singular verb form speaks.

The paradigm of a word.