The term "mala fide" refers to a person or action that is done in bad faith, dishonestly, or with ill intent. The opposite of this term is "bona fide," which means genuine, sincere, or conducted in good faith. For example, a "mala fide" contract would be a deceitful agreement, whereas a "bona fide" contract would be an honest one. Other antonyms for "mala fide" include "trustworthy", "honest", "credible", and "dependable". Using these antonyms in communication can help to clarify that something is being done with integrity and honesty, rather than with deceptive or malicious intent.