Definition

Noun: 1. A change in the form of a word (typically by adding a suffix) to indicate a change in its grammatical function or meaning within a sentence. This is the primary grammatical sense, referring to the process or result of modifying a word to express categories like tense, case, number, gender, mood, or person. 2. (Less common) The act of bending or curving; a curve or bend. This is a technical or formal usage, often found in mathematics or physics. 3. (Less common) A modulation of the voice; a change in pitch or tone. This usage relates to speech and vocal expression.

Usage and Examples

• Grammatical Inflexion:
  • The word "dogs" is an inflexion of "dog" to indicate the plural.
  • In the sentence "She walks," the "-s" is an inflexion showing third-person singular present tense.
  • The difference between "who" (subject) and "whom" (object) is a case of inflexion in English pronouns.
• Other Usages:
  • (Technical) The engineer calculated the inflexion point on the graph where the curve changed direction.
  • (Speech) The actor's subtle vocal inflexion conveyed a sense of irony.

Advanced Usage

• Inflectional Morphology: The subfield of linguistics that studies how words are inflected. For example, studying the inflexion patterns of verbs (walk/walks/walked/walking) is part of inflectional morphology.
• Inflection Point: A specific term in mathematics and business denoting a point on a curve where the curvature changes sign (from concave up to concave down, or vice versa). This is a metaphorical extension of the "bending" sense.

Variants and Related Words

• Inflection: This is the more common modern spelling, especially in American English. "Inflexion" is a variant spelling.
• Inflect (verb): To change the form of a word by inflection. : "The verb 'to be' is highly inflected in English (am, is, are, was, were)."
• Inflectional (adjective): Relating to or involving inflection. : "The '-ed' ending is an inflectional suffix for the past tense."

Synonyms

• Grammatical sense: Conjugation (specifically for verbs), declension (specifically for nouns, pronouns, and adjectives), morphological change.
• Bending sense: Bend, curve, curvature.
• Voice sense: Modulation, intonation, cadence.

Antonyms

• Grammatical sense: Root word, base form, lemma (the dictionary form of a word, e.g., "run" for "runs," "ran," "running").

Notes on Usage

• Spelling: "Inflexion" is an accepted variant, but "inflection" is far more prevalent in contemporary usage, particularly in academic and linguistic contexts.
• Scope: In linguistics, inflexion is distinct from derivation. Inflection creates different forms of the word (e.g., "cat" -> "cats"), while derivation creates a word with a different meaning (e.g., "happy" -> "unhappy" or "happiness").

Noun

1. a change in the form of a word (usually by adding a suffix) to indicate a change in its grammatical function