Swellhead and Smart-ass

Swellhead noun - A conceited and self-centered person.

Smart-ass and swellhead are semantically related In some cases you can use "Smart-ass" instead a noun "Swellhead".

Smart-ass adjective - Making light of something usually regarded as serious or sacred.

Swellhead and smart-ass are semantically related in smart aleck topic. You can use "Swellhead" instead a noun phrase "Smart-ass", if it concerns topics such as person making wise remarks.