Definition of "underscoring" []

• Present participle of underscore. (verb)

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• "Veteran astronaut John Young, a Gemini, Apollo, and Space Shuttle commander joined Abbey in underscoring the need for finding a new trajectory for NASA."
• "This GDP underscoring is the sole reason why America has a higher GDP per capita then Europe."
• "If so, the LBC will have played some short-term role in underscoring the potential of literary weblogs, although their long-term potential is still to be tested."