bitterly, cruelly, mercilessly, ruthlessly, scornfully
gently, playfully
‘Too scary for you?’ he mocked gently.

openly
He openly mocked his parents.

subtly
The play subtly mocks the conventions of romance.

at
He mocked at her hopes of stardom.

for
She mocked him for his failure.

with
She mocked him with her smile.

Mock is used with these nouns as the subject:
eye

Mock is used with these nouns:
A level, amazement, annoyance, attack, disbelief, exam, execution, horror, indignation, innocence, salute, seriousness, severity, sincerity, solemnity, surprise