Definition of amateur
1
: one who engages in a pursuit, study, science, or sport as a pastime rather than as a profession
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. He's a mere amateur when it comes to cooking.
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Merriam-Webster unabridged
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Time Traveler for amateur
The first known use of amateur was in 1757
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