Multiple choice

v. to emphasize or give additional weight to

  1. underscore

  2. vow

  3. undulate

  4. undermine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

To "underscore" literally means to draw a line under a word, but metaphorically it means to emphasize or give additional weight to something. "Undermine" means the opposite, to weaken, and "undulate" means to move with a smooth wavelike motion.

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