Underscoring

verb

1. To throw a strong light on

   "The moon highlighted the tree tops."

2. To center attention on emphasize, stress

   "The speech will highlight the need for education reform."

3. To constitute a significant or especially interesting part of to constitute a highlight of

   "His trip to Italy was highlighted by a visit to the Colosseum."

4. To mark (text) with or as if with a highlighter see highlighter

   "Encourage them to keep a journal and to highlight important entries."

5. To cause (something, such as text or an icon) to be displayed in a way that stands out on an electronic screen (as of a computer or smartphone)

   "highlighted the sentence and deleted it"

6. To add highlights see highlight to (hair)

   "Jonathan, old enough now that he no longer lets his mom highlight his thick brown hair, plays guitar and likes to shoot hoops with his dad …"