- The definition of perky is someone who is cheerful, peppy and self-confident.
A smiling, happy cheerleader with lots of energy is an example of someone who might be described as perky.
- Buoyant and self-confident; briskly cheerful.
- Jaunty and appealing; sprightly: a perky tune.
- Small or firm and well-formed: “her perky, shapely little body” (Joyce Carol Oates).
(comparative perkier, superlative perkiest)