underline

• POS: Noun, Verb (usu participle), Verb (transitive)
• HYPHEN: un=der=line

CIDE DICTIONARY

underline, v. t. 

•  To mark a line below, as words; to underscore.  [1913 Webster]
•  To influence secretly.  Sir H. Wotton.  [1913 Webster]
•  Emphasize or call attention to; highlight; as, Long waits at the emergency room underline the need for a larger hospital.  [JG]

OXFORD DICTIONARY

underline, v. & n.
--v.tr.
1 draw a line under (a word etc.) to give emphasis or draw attention or indicate italic or other special type.
2 emphasize, stress.
--n.
1 a line drawn under a word etc.
2 a caption below an illustration.

THESAURUS

underline

accent, accentuate, band, bar, belabor, blaze, blaze a trail, blemish, blotch, brand, chalk, chalk up, check, check off, cicatrize, cross-hatching, dapple, dash, define, delimit, delineation, demarcate, diagonal, discolor, dot, dotted line, dwell on, emphasize, engrave, feature, fleck, freckle, gash, give emphasis to, hachure, hairline, harp on, hatch, hatching, highlight, impress, imprint, italicize, legend, line, lineation, make a mark, mark, mark off, mark out, mottle, nick, notch, overaccentuate, overemphasize, overstress, pencil, pepper, place emphasis on, play up, point, point up, prick, print, punch, punctuate, puncture, riddle, rub in, scar, scarify, score, scotch, scratch, seal, seam, slash, speck, speckle, splotch, spot, spotlight, stain, stamp, star, stigmatize, streak, streaking, stress, striate, striation, strip, stripe, striping, stroke, sublineation, tattoo, tick, tick off, trace, underlining, underscore, underscoring, virgule

ROGET THESAURUS

underline

Importance

VB be important, be somebody, be something, import, signify, matter, boot, be an object, carry weight, make a figure, be in the ascendant, come to the front, lead the way, take the lead, play first fiddle, throw all else into the shade, lie at the root of, deserve notice, merit notice, be worthy of notice, be worthy of regard, be worthy of consideration, attach importance to, ascribe importance to, give importance to, value, care for, set store upon, set store by, mark, mark with a white stone, underline, write in italics, put in italics, print in italics, print in capitals, print in large letters, put in large type, put in letters, of gold, accentuate, emphasize, lay stress on, make a fuss about, make a fuss over, make a stir about, make a piece of work about, make much ado about, make much ado of, make much of.

Indication

VB indicate, be the sign, of, denote, betoken, argue, testify, bear the impress, of, connote, connotate, represent, stand for, typify, symbolize, put an indication, put a mark, note, mark, stamp, earmark, blaze, label, ticket, docket, dot, spot, score, dash, trace, chalk, print, imprint, impress, engrave, stereotype, make a sign, signalize, underscore, give a signal, hang out a signal, beckon, nod, wink, glance, leer, nudge, shrug, tip the wink, gesticulate, raise the finger, hold up the finger, raise the hand, hold up the hand, saw the air, suit the action to the word, wave a banner, unfurl a banner, hoist a banner, hang out a banner, wave the hand, wave a kerchief, give the cue, show one's colors, give an alarm, sound an alarm, beat the drum, sound the trumpets, raise a cry, sign, seal, attest, underline, call attention to, give notice.