fide

adverb Latin.

1. in bad faith; not genuine.

adjective Latin.

1. of the faith: a phrase used in the Roman Catholic Church to qualify certain teachings as being divinely revealed, belief in them therefore being obligatory.

abbreviation for

1. Fédération Internationale des Echecs: International Chess Federation

adjective

1. RC Church (of a doctrine) belonging to the essentials of the faith, esp by virtue of a papal ruling

adjective

1. undertaken in bad faith