Workaday and Weak-kneed

Workaday adjective - Being of the type that is encountered in the normal course of events.

Weak-kneed and workaday are semantically related. In some cases you can use "Weak-kneed" instead an adjective "Workaday".

Weak-kneed adjective - Lacking strength of will or character.

Workaday and weak-kneed are semantically related. Sometimes you can use "Workaday" instead an adjective phrase "Weak-kneed".