adjective
eccentric
ik-SEN-trik/ɪkˈsentrɪk/
Unconventional or slightly strange in behavior, appearance, or ideas.
Her eccentric gardening uses old boots as flowerpots.

Etymology
The figurative sense odd or whimsical developed into describing behavior or ideas outside convention.
More examples
- He has an eccentric collection of handmade hats.
- The artist's eccentric habits amused her friends.
Forms
eccentric
Similar words
- unconventional
- Emphasizes departure from established practice.
- quirky
- Suggests distinctive and often appealing oddness.