rentiers (en)

a Marxist term (though never actually used by Karl Marx himself) refering to those who receive income - usually interest, rent, dividends, capital gains, or profits - from their assets and investments

repetend (en)

(noun) a repeated sound, word, or phrase / (noun) refrain

res nullius (la)

(lit: nobody's thing) derived from private Roman law whereby res (an object in the legal sense, anything that can be owned, even a slave, but not a subject in law such as a citizen nor land) is not yet the object of rights of any specific subject

reservation profit (en)

the lowest rate of profit that an investor will tolerate in order to put his or her money to work; introduced by Wolfgang Streeck in Buying Time in analogy with reservation wage

resiling (en)

(verb) recoil retract / (verb) to return to a prior position

retiary (en)

using a net or any entangling device

reticular (en)

(adjective) intricate / (noun) a mass of nerve cells and fibers situated primarily in the brain stem and functioning upon stimulation especially in arousal of the organism

revanchism (en)

(noun) revenge / (noun) a usually political policy designed to recover lost territory or status

rheometer (en)

(noun) an instrument for measuring flow (as of viscous substances)

rhizomatic (en)

referring to a type of subterranean plant stem; as a metaphor, means interconnected

ribald (en)

referring to sexual matters in an amusingly rude or irreverent way

Ricardian economics (en)

the economic theories of David Ricardo, an English political economist born in 1772 who made a fortune as a stockbroker and loan broker; influenced by Adam Smith and influenced Karl Marx; wrote about rent, the labour theory of value, and the theory of comparative advantage

rictus (en)

(noun) the gape of a bird's mouth / (noun) the mouth orifice / (noun) a gaping grin or grimace

rifacimento (en)

a recasting or adaptation especially of a literary work or musical composition

risible (en)

(adjective) capable of laughing / (adjective) disposed to laugh / (adjective) arousing or provoking laughter / (adjective) laughable / (adjective) associated with, relating to, or used in laughter

Roaring Seventies (en)

an unusual term (probably localised to anti-capitalist schools) to refer to the 1970's, characterised by high expectations of prosperity and freedom

roman à clef (fr)

a novel in which real people or events appear with invented names

Rortian relativism (en)

pertaining to the relativism allegedly espoused by American philosopher Richard Rorty, though he himself denies it

roughage (en)

fibrous indigestible material in vegetable foodstuffs that aids the passage of food and waste products through the gut

Rousseauian social pact (en)

relating to Jean Jacques Rousseau's book "The Social Contract", on the best way to establish a political community in the face of the problems of commercial society

roué (en)

(noun) a man devoted to a life of sensual pleasure; rake (from French)

rubato (en)

(noun) a fluctuation of tempo within a musical phrase often against a rhythmically steady accompaniment

rubicund (en)

(adj, especially of someone's face) having a ruddy complexion; high-colored

ruction (en)

(noun) a noisy fight / (noun) disturbance uproar

rugosity (en)

(adjective) full of wrinkles / (adjective) having the veinlets sunken and the spaces between elevated