Explanation:

- Subtle typically refers to something that is delicate, elusive, or not immediately obvious. It usually describes something that is refined or understated.

- Option 1: Crafty implies cleverness in a way that can be deceitful. It is not an appropriate antonym because subtle and crafty can be related in context.

- Option 2: Harsh means severe, cruel, or unrefined. It implies a lack of subtlety, often characterized by bluntness or abrasiveness.

- Correct Answer: Harsh

- Option 3: Faint suggests something that is indistinct or barely perceptible, which can be similar to subtle.

- Option 4: Slight implies something that is small in degree or dimension, similar in nature to subtle.