Mockery dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Martha Clarke

To suffer the taunts of others in dreams highlights the sensation that you feel unappreciated, either in the professional field or by your partner. On the other hand, laughing at others is evidence of false confidence as well as hidden fears. So, if it comes from an old man it reflects being afraid of aging; from a disabled person, losing autonomy; and from a homosexual, being afraid that unaccepted inclinations will be made public.
Source: The Big Dictionary of Dreams Author: Martha Clarke

Interpretation 2 — Ibn Seerin

In a dream, mockery means to dupe or to defraud someone.
Source: Islamic Dream Interpretation Author: Ibn Seerin