That is a youngling; young, youthful; (also) †inexperienced (obsolete).

Of, relating to, or characteristic of a novice; that is a novice.

of, befitting, or characteristic of a freshman.

That has not advanced beyond the rudiments. Obsolete.

Recently converted, initiated, or ordained; inexperienced. Also: characteristic of a recent convert or of a beginner or novice; displaying…

transferred. Pertaining to one newly initiated; of or belonging to a novice or unpractised person.

Having the character of a novice or novices. rare.

Of, relating to, or characteristic of a person who is learning the alphabet or who is engaged in elementary education (see sense A. 1a). Now rare.

Relating to a novice; of the nature of or characteristic of a novice.

characteristic of or designating a neophyte.

characteristic of a neophyte.

Designating or characteristic of a new recruit or team member.

Of, pertaining to, or characteristic of a tiro; betraying inexperience; amateurish.

Used allusively of an inexperienced, ‘green’, or amateurish person, or of something cheap or of little value.