Collocations for amused - adj.

be, look, seem, sound
She looked faintly amused.

keep sb
He kept the children amused for hours.

extremely, fairly, very, etc.
greatly, highly, much, thoroughly, vastly
He was much amused by all this talk.

not at all
I was not at all amused to find they had eaten all the cake.

a little, slightly, etc.
faintly, mildly, vaguely
clearly
Mr Stopes was clearly amused by the confusion.

genuinely
quietly
easily
I am very easily amused.

at
Tony was very amused at the story.

by
She seemed greatly amused by his jokes.

Amused is used with these nouns:
chuckle, disbelief, expression, eyebrow, glance, grin, laugh, look, smirk, twinkle