watch somebody with amusement
watch somebody with delight

I watched the changes in her body with amusement and delight.

She watched him with great amusement, laughed and shook her head.

A white man standing near the middle of the bar watched them with cynical amusement.

Across the plain the tall white world seemed to watch with silent amusement.

Some lobbyists have been watching the whole affair with amusement.

Jeremy watched with amusement as she turned away, thinking that he'd met her type before.

The woman stood a little to the side, watching the men with amusement.

But he was standing back, watching her with supreme arrogance and amusement.

He eased himself back into his chair and watched her with amusement.

She saw the lord and the generals watching her with amusement.