1. to mark with a line or lines underneath; underscore.
2. to indicate the importance of; emphasize, as by stressing or italicizing. noun
3. Printing. a caption under an illustration.
4. a line drawn under something; an underscore.
"points can be underlined in texts."
"people can be underlined with italics."
"concerns can be underlined."
"terms can be underlined."
"claims can be underlined."
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