underlineation
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underline — underlineation /un deuhr lin ee ay sheuhn/, n. underliner, n. v. /un deuhr luyn , un deuhr luyn /; n. /un deuhr luyn /, v., underlined, underlining, n. v.t. 1. to mark with a line or lines underneath; underscore. 2. to indicate the importance of; … Universalium