Amateur
Part of speech: adjective
Definition: Non-professional. Created, done, or populated by amateurs or non-professionals. Showing a lack of professionalism, experience or talent.
Part of speech: noun
Definition: A lover of something. A person attached to a particular pursuit, study, or science as to music or painting; esp. one who cultivates any study or art, from taste or attachment, without pursuing it professionally. Someone who is unqualified or insufficiently skillful.
Example sentence: I'm different. I have a different constitution, I have a different brain, I have a different heart. I got tiger blood, man. Dying's for fools, dying's for amateurs.
Amateurish
Part of speech: adjective
Definition: Suggesting or reflecting the efforts of an amateur; not seeming professional or polished.