Following are all the upperclassman like words, in the list below.
UPPERCLASSPERSON
100% like upperclassman
UNDERCLASSMAN
100% like upperclassman
JUNIOR
100% like upperclassman
CLASSMAN
100% like upperclassman
UNDERCLASSPERSON
100% like upperclassman
SUBFRESHMAN
100% like upperclassman
SENIOR
100% like upperclassman
ALUMNUS
100% like upperclassman
FRESHMAN
100% like upperclassman
ELEVENTH GRADER
100% like upperclassman
CLASSMATE
100% like upperclassman
TENTH GRADER
100% like upperclassman
FROSH
100% like upperclassman
PREFROSH
100% like upperclassman
UPPER
100% like upperclassman
UPPER CLASS
100% like upperclassman
PREFRESHMAN
100% like upperclassman
HIGHER-UP
100% like upperclassman
COLLEGIANER
100% like upperclassman
SCHOOLPERSON
100% like upperclassman
SCHOOLGOER
100% like upperclassman
YOUNGSTER
100% like upperclassman
PLEBE
100% like upperclassman
OLD BOY
100% like upperclassman
SCHOOLKID
100% like upperclassman
SCHOOLCHILD
100% like upperclassman
PUPIL
100% like upperclassman
FELLOW
100% like upperclassman
CADET
100% like upperclassman
NONSTUDENT
100% like upperclassman
SUNBAE
100% like upperclassman
FRAT BOY
100% like upperclassman
SCHOOLER
100% like upperclassman
FIFTH GRADER
100% like upperclassman
FIRST GRADER
100% like upperclassman
SECOND GRADER
100% like upperclassman
CLASS SECRETARY
100% like upperclassman
MIDDLER
100% like upperclassman
GENTLEMAN-COMMONER
100% like upperclassman
DEAN
100% like upperclassman
FIRSTIE
100% like upperclassman
ALUMNI
100% like upperclassman
SCHOOLMATE
100% like upperclassman
YOUNGER
100% like upperclassman
HEAD BOY
100% like upperclassman
CLASS ACT
100% like upperclassman
FAGMASTER
100% like upperclassman
JUVENILE
100% like upperclassman
PREPSTER
100% like upperclassman
GRADUATOR
100% like upperclassman
COLLEGEMATE
100% like upperclassman
LECTURER
100% like upperclassman
SURMASTER
100% like upperclassman
ELDER
100% like upperclassman
MINOR
100% like upperclassman
VALEDICTORIAN
100% like upperclassman
UPTOWNER
100% like upperclassman
UNDERCLASSER
100% like upperclassman
COLLEGER
100% like upperclassman
JAYCEE
100% like upperclassman
PREX
100% like upperclassman
PREFECT
100% like upperclassman
COLLEGIAN
100% like upperclassman
SENPAI
100% like upperclassman
REPRESENTATIVE
100% like upperclassman
POPULAR
100% like upperclassman
FAMULIST
100% like upperclassman
JUVIE
100% like upperclassman
MASTER
100% like upperclassman
ENROLLEE
100% like upperclassman
HOOBAE
100% like upperclassman
SALUTATORIAN
100% like upperclassman
HEADMASTER
100% like upperclassman
PREXY
100% like upperclassman
SUPERSESSOR
100% like upperclassman
YOUNGIE
100% like upperclassman
ELITE
100% like upperclassman
SCHOOLIE
100% like upperclassman
SUPERINTENDENT
100% like upperclassman
SENIOR CITIZEN
100% like upperclassman
EARLYCOMER
100% like upperclassman
FIRSTLING
100% like upperclassman
YOUTH
100% like upperclassman
FIRST-CLASS CITIZEN
100% like upperclassman
STUDENT TEACHER
100% like upperclassman
CLERK
100% like upperclassman
SNOB
100% like upperclassman
US'ER
100% like upperclassman
YOUNG ADULT
100% like upperclassman
UPSTATER
100% like upperclassman
FELLOW-COMMONER
100% like upperclassman
FORMER
100% like upperclassman
CAPTAIN
100% like upperclassman
JAFFY
100% like upperclassman
UNDERAGER
100% like upperclassman
SCHOOLFELLOW
100% like upperclassman
BROFESSOR
100% like upperclassman
UPCOMER
100% like upperclassman
TUTOR
100% like upperclassman
YOUNGBLOOD
100% like upperclassman