Explanation:

- The word bonafide means genuine or real. It implies authenticity and legitimacy.

- Option 1: Decent - This suggests something that is morally acceptable or satisfactory, not necessarily a direct opposite of bonafide.

- Option 2: Liability - This refers to a responsibility or something disadvantageous, which doesn’t contrast directly with genuineness.

- Option 3: Malafide - This means done with bad intent or in bad faith. It is the opposite of bonafide, which is done with good intent.

- Option 4: Maladies - This refers to diseases or ailments, not an antonym for bonafide.