This came out of the crossword John and I were doing together this morning.
The clue was novice.
The answer had 4 letters and ended in o.
I had no idea.
John immediately suggested tyro.
A brand new gem of info for me!
Extra Info From Me
Merriam-Webster Online Dictionary https://www.merriam-webster.com/thesaurus/tyro gives the following.
Synonyms – abecedarian, apprentice, babe, colt, cub, fledgling, freshman, greenhorn, neophyte, newbie, newcomer, novice, novitiate, punk, recruit, rook rookie, tenderfoot, beginner, virgin
Related Words – boot, amateur, dabbler, dilettante, learner, student, trainee, candidate, entrant, probationer
Tyro comes from the Latin tiro, which means young soldier, new recruit, or more generally, novice.