I. | ̷ ̷ ̷ ̷| ̷ ̷ transitive verb
Etymology: under (I) + score
1. : to draw a line under : underline
twenty lines of it were heavily underscored in red ink — L.C.Douglas
2. : emphasize
the conference also underscored the very great importance of isotopes to industry, biology, and medicine — R.J.Bunche
3. : to provide (action on film) with accompanying music
II. ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
1. : a line drawn under a word or line especially for indicating emphasis or italic letters : underscoring
2. : music accompanying the action and dialogue of a film