Hard to use and Unmanageable

Unmanageable and hard to use are semantically related. in difficult to handle topic. In some cases you can use "Unmanageable" instead an adjective phrase "Hard to use".

Unmanageable adjective - Given to resisting control or discipline by others.

Hard to use and unmanageable are semantically related. You can use "Hard to use" instead an adjective "Unmanageable".