Inexperienced means not yet having done something enough to be good at it. An inexperienced driver, young and inexperienced, inexperienced at this.
It is a statement of fact rather than an insult, which is what separates it from incompetent. Insurance treats it as a measurable risk, and an inexperienced driver pays several times as much.
1adjectiveinexperiencedNot yet having done something enough to be good at it.
“The inexperienced young teacher struggled to control the noisy class.”
inexperienced is a quality.
From in- + experienced.
Etymology from Wiktionary, CC BY-SA