1. a person who takes up an art, activity, or subject merely for amusement, especially in a desultory or superficial way; dabbler.
2. a lover of an art or science, especially of a fine art.
Wordsmith Wednesdays made-up example sentence:
They didn’t want dilettantes contributing to the project, insisting that it be left to trained professionals.
View this word on Dictionary.com for pronunciation and additional definitions.