The trial was a travesty of justice. Synonym for 'Travesty' is -

• Travesty (noun)  
English Meaning: ​Travesty (of something) something that does not have the qualities or values that it should have, and as a result is often considered wrong or offensive.
Bangla Meaning: প্যারোডি।

Synonyms: Parody (ব্যাঙ্গাত্মক অনুকরণ), Mockery (বিদ্রুপ), Satire (বিদ্রুপাত্মক রচনা), Exaggeration (বাড়াবাড়ী, মাত্রাতিরিক্ততা, বাহুল্যতা), Distortion (বিকৃতি)। 
Antonyms: Seriousness (গাম্ভীর্যতা), Frankness (অকপট), Solemnity (গাম্ভীর্য), Forthrightness (স্পষ্টবাদীতা), Candidness (সাবলীলতা)। 

Other Forms:
- (verb transitive) (past tense, past participle travestied) প্যারোডি করা।

Example Sentence: 
1. The trial was a travesty of justice.
2. This travesty of Richardson's novel became the most frequently reprinted edition of the early 19th century.

Source: Website Lecture.