Velma Dinkley’s best-known catchphrase in the Scooby-Doo franchise is “Jinkies!”
Velma is the analytical, clue-focused member of Mystery Inc. Her exclamation is typically used when she makes a discovery, notices an important clue, or reacts to an unexpected development in a mystery. The phrase became closely associated with her character even though its exact frequency varies between series and films.
The other answers are also associated with Scooby-Doo characters. “Zoinks!” is strongly linked with Shaggy, “Ruh-roh!” is associated with Scooby-Doo, and “Jeepers!” is commonly associated with Daphne. These expressions help distinguish the gang’s comic personalities.
Velma’s role is not limited to catchphrases. In the original series, she frequently identifies patterns, interprets evidence, and helps expose the person behind a supposedly supernatural event. Her glasses, orange clothing, and precise reasoning became equally recognizable parts of her traditional design.