Word Type

Verb

Noun

Adjective

The word "underline" can be used as verb, noun and adjective.

Word Relationships

Opposites (Antonyms)

overline

Coordinate Terms

at-grade bold boldface embolden italicize overgrade strike through undergrade

Derived From

line

Broader Terms (Hypernyms)

accent accentuate emphasise emphasize mark punctuate stress stroke

Manner Of

mark

Related Terms

ampersand asterisk and asterism at sign backslash bullet dagger degree symbol number sign pipe prime tilde underscore vertical bar

Related Terms

advertisement announcement emphasis hyperlink influence italics line performance railway line stress text theatrical underscore

Synonym Network

underscore

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.