English edit

Etymology 1 edit

under- +‎ scorer

Noun edit

underscorer (plural underscorers)

  1. One who achieves an unsatisfactorily low score on a test, etc.

Etymology 2 edit

underscore +‎ -er

Noun edit

underscorer (plural underscorers)

  1. That which underscores or emphasizes so as to draw attention.