Silly and Weak-kneed

Silly adjective - Lacking in seriousness or maturity.

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

Nearby Word: silliness

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

Silly and weak-kneed are semantically related in dazed topic. Sometimes you can use "Silly" instead an adjective phrase "Weak-kneed".