dilettanteism

Example:After years of dedication and hard work, Jennifer transformed her amateurism in painting into true expertise.

Definition:A special skill or in-depth knowledge in a particular subject or field.

Example:The museum showcased the impressive professionalism of the art collectors, whose passion and knowledge no longer showed darlings of dilettanteism in art.

Definition:The characteristics of a profession, such as knowledge, precision and objectivity, also the condition or quality of being professional and focused in one's work.

Example:The art exhibition came under fire for encouraging a proliferation of dilettanteism in art, causing a wave of skepticism in the community.

Definition:Doubt and doubtfulness. (Note: Although not directly opposite, it can be used in contexts underpinned by combating dilettanteism antics.)