(law enforcement) A person who secretly provides information to the police about wrongdoing which they are aware of due to their relationship to the wrongdoer.

(law) Consent to an action by another person given based upon a clear appreciation and understanding of the facts, implications, and consequences of the action.

plural of informal logic

(Oxford University) The director of music at Magdalen College, Oxford.

plural of informed consent

(taxonomy) Sometimes used to indicate that a formerly accepted taxonomic group is considered not to be paraphyletic or polyphyletic

That branch of logic whose task is to develop non-formal standards, criteria, procedures for the analysis, interpretation, evaluation, criticism and construction of argumentation in everyday discourse.

comparative form of well-informed: more well-informed

superlative form of well-informed: most well-informed

Poorly informed; ignorant.