IDIOSYNCRATIC

_{[id-ee-oh-sin-KRAT-ik]}

The professor had an idiosyncratic teaching style, drawing elaborate diagrams in different colors and making odd sound effects to explain complex theories, but his students loved it because it made the material memorable.

(adjective) Behaviors, habits, or characteristics that are unique to an individual. It describes peculiar or distinctive ways of doing things that are particular to one person, often involving unusual mannerisms or preferences that others might find quirky.