Donnish and Ivory-towerish

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

Ivory-towerish and donnish are semantically related. in impractical topic. In some cases you can use "Ivory-towerish" instead an adjective "Donnish".

Ivory-towerish adjective - Very learned or educated but inexperienced in practical matters.

Donnish and ivory-towerish are semantically related. Sometimes you can replace term "Donnish" with "Ivory-towerish", this terms are similar.