underline

[ verb uhn-der-lahyn, uhn-der-lahyn; noun uhn-der-lahyn ]
/ verb ˈʌn dərˌlaɪn, ˌʌn dərˈlaɪn; noun ˈʌn dərˌlaɪn /

verb (used with object), un·der·lined, un·der·lin·ing.

to mark with a line or lines underneath; underscore.
to indicate the importance of; emphasize, as by stressing or italicizing.

noun

Printing. a caption under an illustration.
a line drawn under something; an underscore.

Nearby words

  1. underlayer,
  2. underlayment,
  3. underleaf,
  4. underlet,
  5. underlie,
  6. underlinen,
  7. underling,
  8. underlit,
  9. underlying,
  10. undermanned

Origin of underline

First recorded in 1715–25; under- + line1

Related formsun·der·lin·ing, un·der·lin·e·a·tion [uhn-der-lin-ee-ey-shuh n] /ˌʌn dərˌlɪn iˈeɪ ʃən/, nounun·der·lin·er, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for underline


British Dictionary definitions for underline

underline

verb (ˌʌndəˈlaɪn) (tr)

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

Word Origin and History for underline

underline

v.

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

Online Etymology Dictionary, © 2010 Douglas Harper