Ridiculous is a synonym of Stupid. Stupid is a synonym of Dumb. Dumb is related to Ear. 
you are likely to find Courtroom in/at/on Confession. Courtroom is related to Jury. Jury is related to Justice. 
Ridiculous <--Synonym--> Stupid <--Synonym--> Dumb <--RelatedTo--> Ear 
Confession <--AtLocation-- Courtroom <--RelatedTo--> Jury <--RelatedTo--> Justice 