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⇱ underline - WordReference.com Dictionary of English

underline

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UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˌʌndərˈlaɪn/

US:USA pronunciation: IPAUSA pronunciation: IPA/ˈʌndɚˌlaɪn/

US:USA pronunciation: respellingUSA pronunciation: respelling(v. un′dər līn′, un′dər līn′; n. un′dər līn′)


Inflections of 'underline' (v): (⇒ conjugate)
underlines
v 3rd person singular
underlining
v pres p
underlined
v past
underlined
v past p

WordReference Random House Learner's Dictionary of American English © 2026
un•der•line /ˈʌndɚˌlaɪn/USA pronunciation   v., -lined, -lin•ing, n. 
v. [~ + object]
  1. to mark with a line or lines underneath;
    underscore:underlined the paragraph.
  2. to indicate the importance of;
    emphasize:underlined the need for caution.

n. [countable]
  1. a line drawn beneath;
    underscore.
See -lin-.
WordReference Random House Unabridged Dictionary of American English © 2026
un•der•line  (v. un′dər līn′, un′dər līn′;n. un′dər līn′),USA pronunciation v., -lined, -lin•ing, n. 
v.t. 
  1. to mark with a line or lines underneath;
    underscore.
  2. to indicate the importance of;
    emphasize, as by stressing or italicizing.

n. 
  1. Printinga caption under an illustration.
  2. a line drawn under something;
    an underscore.
  • under- + line1 1715–25
un′der•lin′er, n. 

Collins Concise English Dictionary © HarperCollins Publishers::
underline vb /ˌʌndəˈlaɪn/ (transitive)
  1. to put a line under
  2. to state forcibly; emphasize or reinforce
'underline' also found in these entries (note: many are not synonyms or translations):
Collocations: with a [black, blue, red] underline, use an underline to [show, highlight], is missing an underline, more...

🗣️Forum discussions with the word(s) "underline" in the title:


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