Ho hum and Weak-kneed

Weak-kneed and ho hum are semantically related. In some cases you can use "Weak-kneed" instead an adjective phrase "Ho hum".

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

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