un·​der·​line | \ ˈən-dər-ˌlīn How to pronounce underline (audio) , ˌən-dər-ˈlīn How to pronounce underline (audio) \
underlined; underlining; underlines

Definition of underline

 (Entry 1 of 2)

transitive verb

1 : to mark (something, such as a word) with a line underneath
2 : to put emphasis on : stress
3 : to show clearly or emphatically


un·​der·​line | \ ˈən-dər-ˌlīn How to pronounce underline (audio) \

Definition of underline (Entry 2 of 2)

1 : the outline of a quadruped's underbody also : the ventral surface of a quadruped's body
2 : a horizontal line placed underneath something

Synonyms & Antonyms for underline

Synonyms: Verb

Antonyms: Verb

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Examples of underline in a Sentence

Verb His name was underlined in the book. The accident underlines our need for better safety procedures.
Recent Examples on the Web: Verb The routine bombast of Craig DeLeon’s score, and various preexisting pop tracks utilized, further underline an overall lack of instinct for thriller atmospherics. Dennis Harvey, Variety, 8 Sep. 2022 These figures underline the resilience and resurgence of the city’s travel and tourism sector. Debbi Kickham, Forbes, 27 June 2022 These declines underline growing concern about these chemicals, and what amount is safe to drink. Wyatte Grantham-philips, USA TODAY, 13 Aug. 2022 This article aims to underline three particular challenges that may be on the horizon for employers and hopefully shed light on valuable initiatives to create an easier path. Daniel Fallmann, Forbes, 9 Aug. 2022 Researchers say these events underline the dangers of a rapidly warming world and are expected to increase unless greenhouse gas emissions are curbed. Kasha Patel, Anchorage Daily News, 13 July 2022 Prudence needs to underline the strategy, but there should be a bias to action. Jonathan Fianu, Forbes, 18 Aug. 2022 Kendall Jenner’s latest ensemble serves to underline the point. Alex Kessler, Vogue, 27 June 2022 Interactions like those just underline his point further -- human relationships are key to moving forward. Lilit Marcus, CNN, 20 June 2022 Recent Examples on the Web: Noun The new logo features a modern, sleek font mean to position LEKI for the future, with a red-and-yellow underline paying tribute to the heritage of the brand’s iconic colors that have stuck around for three decades. Outside Online, 18 May 2022 Strawberry and raspberry drive this fresh and snappy wine with an underline of spice. Lana Bortolot, Forbes, 30 Apr. 2022 Still, the numbers show that Ekitike has enormous upside and underline why the Rekordmeister is seriously considering him as a potential signing this summer. Manuel Veth, Forbes, 27 June 2022 Citing a 2021 study conducted by Women In Film and Pepperdine University, Krinsky and Paling underline the obstacles women have commonly faced in bringing stories to the screen. Devon Foster, Variety, 26 Apr. 2022 The first three entries in this list underline how important code has become to winning in today’s—and tomorrow’s—business world. Martin Giles, Forbes, 27 Dec. 2021 Experts and advocates say the question marks remaining in the Indianapolis case underline what may be limits to Indiana’s gun policy. Washington Post, 19 Apr. 2021 Yet last month’s abandonment of plans for a Time Out Market in its home city London and a subsequent cash call underline how hard the media group’s culinary destination arm has been hit. Mark Faithfull, Forbes, 6 Apr. 2021 That double-underlines and triple-circles, in red ink, the most pressing need for this group: someone who can score consistently beyond the Marchand-Bergeron-David Pastrnak trio. BostonGlobe.com, 14 Dec. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'underline.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of underline


1721, in the meaning defined at sense 1


1886, in the meaning defined at sense 1

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Time Traveler for underline

Time Traveler

The first known use of underline was in 1721

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Statistics for underline

Last Updated

13 Sep 2022

Cite this Entry

“Underline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underline. Accessed 24 Sep. 2022.

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More Definitions for underline


un·​der·​line | \ ˈən-dər-ˌlīn How to pronounce underline (audio) \
underlined; underlining

Kids Definition of underline

1 : to draw a line under
2 : emphasize The poor results underline our need to try harder.

More from Merriam-Webster on underline

Nglish: Translation of underline for Spanish Speakers

Britannica English: Translation of underline for Arabic Speakers

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