Correct spelling, explanation: amateur is based on the Latin word amare meaning to love. Since then, the word underwent some changes in its form and meaning. In amateur, the French suffix -teur has been added to signify a person, and this suffix stayed even after the word has been adapted into English for good.

Definition of amateur:
Noun
1. A person who likes doing something as a hobby
Ever since she was a child she was an amateur in ballet.
2. A beginner, someone incompetent
Tim loves to write but he’s a complete amateur when it comes to literary theory.
Adjective
1. Done in an unprofessional, improper manner
The contest was so amateur that there wasn’t even a proper prize for the winner!

Incorrect spelling, explanation: ameteur is an incorrect spelling of the word amateur, probably suggested by the pronunciation. The correct word, however, is based on the Latin amare, which clearly suggests the spelling with a.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling