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underlining

noun, verb

underlining is spelled U-N-D-E-R-L-I-N-I-N-G: 11 letters and 4 syllables. It appears about once in every 2 million words in written English, the 42,145th most frequent word form (wordfreq, 2021 data). As a noun, underlining means “An act or instance of marking text with an underline” (English Wiktionary, September 2026). The plural of underlining is underlinings.

How many letters and syllables are in underlining?

Letters11: U-N-D-E-R-L-I-N-I-N-G
Syllables4 (from its American pronunciation)
In writingabout once in every 2 million words; the 42,145th most frequent word form
Wrong spellings searchednone measured in search

Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How common is underlining?

Underlining appears about once in every 2 million words in written English, the 42,145th most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How do you pronounce underlining?

  • US

Underlining has 4 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Flame,_not_lame-underlining.wav, Wikimedia Commons (author and licence on each file's page).

Forms of underlining

  • underlinings plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does underlining mean?

The meanings the English Wiktionary records, quoted as written there (source below).

noun

  1. 1

    An act or instance of marking text with an underline.

  2. 2

    A lining on the inside of a garment.

verb

  1. 1

    present participle and gerund of underline (a form of underline)

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Where does underlining come from?

From underline + -ing.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What to look up after underlining