Standard Lemma guide

lengthening

noun · verb · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /ˈlɛŋ(k)θənɪŋ/
  • Received-Pronunciation: /ˈlɛŋ(k)θnɪŋ/
  • General-American: /ˈlɛŋ(k)θənɪŋ/
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -ɛŋkθənɪŋ
  • CMU ARPABET: L EH1 NG TH AH0 N IH0 NG Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
  • CMU ARPABET 2: L EH1 NG K TH AH0 N IH0 NG Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

The process of making or growing longer.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a type of sound change when a sound (especially a vowel) lengthens

Definition source: English Wiktionary via Wiktextract

Topics: human-sciences, linguistics, phonology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

verb

Meaning 3

present participle and gerund of lengthen

Definition source: English Wiktionary via Wiktextract

Usage: form-of, gerund, participle, present

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

the act of prolonging something

Definition source: Princeton WordNet 3.0

Examples

  • there was an indefinite prolongation of the peace talks

Meaning relationships

Synonyms: prolongation, protraction, perpetuation

Antonyms: none provided

Broader terms: continuance, continuation

History

Etymology

Etymology tree English lengthen Middle English -ynge English -ing English lengthening From lengthen + -ing.

Across languages

Translations

7 source translations are retained for this English entry.

  • Finnish: pidentyminen — sound change
  • French: allongement — sound change
  • Galician: alongamento — sound change
  • German: Längung — sound change
  • Ancient Greek: ἐπέκτασις (epéktasis) — sound change
  • Hungarian: nyúlás — sound change
  • Japanese: 延長 (enchō) — sound change