Donnish and Egghead

Donnish adjective - Marked by a narrow focus on or display of learning especially its trivial aspects.

Egghead and donnish are semantically related. in brainy topic. In some cases you can use "Egghead" instead an adjective "Donnish". informal substitute

Egghead noun - A person with strong intellectual interests.

Donnish and egghead are semantically related. Sometimes you can replace term "Donnish" with "Egghead", this nouns are similar.