Synonyms to rigor

absolute zero, algidity, bitterness, bleakness, boiling point, briskness, chill, chilliness, cold, coldness, cool, coolness, coolth, crispness, cryogenics, cryology, decrease in temperature, dew point, freezing point, freshness, frigidity, frostiness, gelidity, iciness, inclemency, intense cold, keenness, low temperature, melting point, nip, nippiness, rawness, recalescence point, severity, sharp air, sharpness, temperature, zero, abstinence, Albigensianism, Catharism, Encratism, Franciscanism, Friday, Lenten fare, Platonic love, Pythagoreanism, Pythagorism, Rechabitism, Sabbatarianism, Shakerism, Spartan fare, Stoicism, Trappism, Waldensianism, Yoga, abnegation, abstainment, abstemiousness, abstention, abstinence from food, anchoritic monasticism, anchoritism, asceticism, austerity, avoidance, banyan day, calm, calmness, celibacy, chastity, conservatism, constraint, continence, continency, control, desuetude, dispassion, disuse, eremitism, eschewal, evenness, fast, fasting, fish day, flagellation, fruitarianism, gentleness, golden mean, gymnosophy, happy medium, impartiality, intactness,