A Latin term meaning "in the manner of a pauper." Allowing a poor person to bring suit without liability for the costs of the suit.
A federal court's decision not to exercise jurisdiction over a case. The usual goal of abstention is the avoidance of needless conflict with a state court. See Federalism.
A Latin term meaning literally 'from [the] stronger'. Translated into English and used in the particular context of legal writing, the term often means 'from [the] stronger [argument]'. If a particular fact is true, then one can infer that a second fact is also true.