am·a·teur
ˈa-mə-chər
-ˌtu̇r
-ˌchu̇r,
-(ˌ)tər -ˌtyu̇r
1
: one who engages in a pursuit, study, science, or sport as a pastime rather than as a profession
a group of professional musicians and talented amateurs
She played soccer as an amateur before turning professional.
a tournament that is open to both amateurs and professionals
2
: one lacking in experience and competence in an art or science
The people running that company are a bunch of amateurs.
You can tell that the work was done by amateurs.
He's a mere amateur when it comes to cooking.
am·a·teur·ish
¦a-mə-¦tər-ish
-¦t(y)u̇r-
-¦chu̇r-,
-¦chər-
: having the characteristics of an amateur : lacking professional finish
an amateurish actor
amateurishly
adverb
amateurishness
noun
Scornful of what he viewed as the reckless amateurishness of the American plan, the acidic Brooke denigrated Marshall in his war diaries as a poor strategist …
—
Lynne Olson, Washington Post, 9 Aug. 2009
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Merriam-Webster unabridged



