[uhn-der-klas-muh n, -klahs-]
noun, plural un·der·class·men.
a freshman or sophomore in a secondary school or college.
Origin of underclassman
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for underclassmanfreshman, senior, junior, student, sophomore, novice, undergraduate, rookie, underclassman, plebe, greenhorn, beginner, undergrad, coed, upperclassman, frosh
Online Etymology Dictionary, © 2010 Douglas Harper