If "sharp" refers to a physical edge:
* Blunt: This is the most common antonym.
* Dull: Similar to blunt, but can also refer to a lack of sharpness in something like a sound or image.
* Rounded: This specifically refers to the shape of the object.
If "sharp" refers to intelligence or wit:
* Slow: This implies a lack of mental agility.
* Dumb: A less polite way of saying slow or lacking in intelligence.
* Obtuse: This refers to a lack of understanding or perceptiveness.
If "sharp" refers to a sudden change or a distinct sound:
* Gradual: This implies a slow and steady change.
* Soft: This refers to a gentle or muted sound.
* Smooth: This describes a seamless transition or a continuous sound.
If "sharp" refers to a painful sensation:
* Mild: This describes a less intense sensation.
* Gentle: This implies a soft and pleasant sensation.
* Soothing: This refers to a feeling that reduces pain or discomfort.
It's important to consider the specific context of the word "sharp" to choose the most accurate antonym.