Standard Lemma guide

underlining

noun · verb · 3 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.

  • US: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: AH1 N D ER0 L AY2 N IH0 NG Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

An act or instance of marking text with an underline.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: underlineation

Antonyms: none provided

2

noun

Meaning 2

A lining on the inside of a garment.

Definition source: English Wiktionary via Wiktextract

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 underline

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

History

Etymology

From underline + -ing.

Etymology tree Proto-Indo-European *h1én Proto-Indo-European *h1entér Proto-Indo-European *(H)n̥dhí Proto-Indo-European *-ér Proto-Indo-European *(H)n̥dhér Proto-Germanic *under Proto-West Germanic *undar Old English under- Middle English under- English under- English lining English underlining From under- + lining.