personality

Someone who is cunning has the ability to achieve things in a clever way, often by deceiving other people.

If you describe someone as half-witted, you think they are very stupid, silly, or irresponsible.

If you say that someone is ruthless, you mean that you disapprove of them because they are very harsh or cruel, and will do anything that is necessary to achieve what they want.

If you say that someone is conceited, you are showing your disapproval of the fact that they are far too proud of their abilities or achievements.

If you describe something as unbearable, you mean that it is so unpleasant, painful, or upsetting that you feel unable to accept it or deal with it.