9 Grammatical Pitfalls


[v. uhn-der-lahyn, uhn-der-lahyn; n. uhn-der-lahyn] /v. ˈʌn dərˌlaɪn, ˌʌn dərˈlaɪn; n. ˈʌn dərˌlaɪn/
verb (used with object), underlined, underlining.
to mark with a line or lines underneath; underscore.
to indicate the importance of; emphasize, as by stressing or italicizing.
Printing. a caption under an illustration.
a line drawn under something; an underscore.
Origin of underline
1715-25; under- + line1
Related forms
underlining, underlineation
[uhn-der-lin-ee-ey-shuh n] /ˌʌn dərˌlɪn iˈeɪ ʃən/ (Show IPA),
underliner, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for underline
  • And how the folk who have commented here underline that.
  • Your statements underline my conviction that you are utterly ignorant of the evidence.
  • underline introduction and ask students what it means.
  • Then have them underline the words that helped them form the picture.
  • Ask students to highlight or underline the sections they don't understand.
  • underline stuff, circle key words, and put notes in the margin.
  • Make the students underline the thesis statement before they turn in the essay.
  • They needed to underline their father-figure agency through punitive castigation to succeed.
  • To underline: these visionaries have been the exception, not the rule.
  • We need a detail plan that will underline a step by step process for the next five years.
British Dictionary definitions for underline


verb (transitive) (ˌʌndəˈlaɪn)
to put a line under
to state forcibly; emphasize or reinforce
noun (ˈʌndəˌlaɪn)
a line underneath, esp under written matter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for underline

1721, from under + line (v.). Cf. Dutch onderlijnen. Related: Underlined; underlining. The noun is attested from 1888.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for underline

Some English speakers likely know this word

Word Value for underline

Scrabble Words With Friends

Quotes with underline