A first-year undergraduate.

synonym: fresher.

Dutch: eerstejaars, eerstejaarsstudent, feut
Polish: pierwszoroczny, pierwszoroczniak

Any new participant in some activity.

synonyms: entrant, fledgeling, fledgling, neophyte, newbie, newcomer, starter.

Roget 541: learner, scholar, student, pupil; apprentice, prentice^†, journeyman; articled clerk; beginner, tyro, amateur, rank amateur; abecedarian, alphabetarian^†; alumnus, eleve [Fr.].    recruit, raw recruit, novice, neophyte, inceptor^†, catechumen, probationer; seminarian, chela, fellow-commoner; debutant.    [apprentice medical doctors] intern; resident.    schoolboy; fresh, freshman, frosh; junior soph^†, junior; senior soph^†, senior; sophister^†, sophomore; questionist^†.    [college and university students] undergraduate; graduate student; law student; medical student; pre-med; post-doctoral student, post-doc; matriculated student; part-time student, night student, auditor.    [group of learners] class, grade, seminar, form, remove; pupilage etc. (learning) 539.    disciple, follower, apostle, proselyte; fellow-student, condisciple^†.    [place of learning] school etc. 542.    ... show more

Dutch: beginneling, groentje, debutant, beginner, nieuweling, nieuwkomer
Polish: nowy

Used of a person in the first year of an experience (especially in United States high school or college):
— A freshman senator.
— Freshman year in high school or college.

synonym: first-year.