Hobbyist (noun)

A person who pursues a particular hobby or leisure activity as a regular pastime.

Origin:

Derived from the word 'hobby' meaning 'an activity done regularly in one's leisure time for pleasure'.

Examples:

1. John is a hobbyist who enjoys collecting stamps.
2. Sophie is a hobbyist who enjoys painting in her free time.
3. The hobbyist built a model train set in his basement.
4. The hobbyist was passionate about gardening and spent many hours in the garden.
5. The hobbyist was an expert in antique cars and often participated in car shows.