(idiomatic) To act in an uncontrolled, unbridled manner. / (idiomatic) To be uncontrollable.

(mineralogy) A monoclinic-prismatic mineral containing bismuth, hydrogen, oxygen, and sulfur.

(archaic) Wild excess; revelry, riotousness.

An autonomous community and province in northern Spain. Capital: Logroño. / A province of Argentina. / The capital of La Rioja, Argentina.

The act or practice of rioting.

plural of rioting

Without riots or rioting.

plural of rioja

(zoology) Any member of the Riodinidae.

plural of riodinid