Milk-and-water and Sapless

Milk-and-water adjective - Lacking in qualities that make for spirit and character.

Sapless and milk-and-water are semantically related in tasteless topic. In some cases you can use "Sapless" instead an adjective phrase "Milk-and-water".

Sapless adjective - Destitute of sap and other vital juices; dry.

Milk-and-water and sapless are semantically related in tasteless topic. Sometimes you can use "Milk-and-water" instead an adjective "Sapless".