Crossword clues for More rigorous.:RIGORStringencyRIGORHarshness of rulesRIGORSeverity, as of rulesRIGORSHarsh conditionsRIGORInflexible natureRIGORSSevere conditionsRIGORExcessive sternnessRIGORExactnessRIGORSTrialsRIGORNo-nonsense natureRIGORSDifficultiesRIGORAttention to detailRIGORInflexible accuracyRIGORExactitudeRIGORSHardshipsRIGORScrupulous accuracyRIGORSeverityRIGOROUSDemandingRIGORSVicissitudesRIGORIntellectual precisionRIGORHarsh inflexibilityRIGORHarshnessRIGORInflexibilityRIGORLack of toleranceRIGORAusterityRIGORToughnessRIGORLaxity's oppositeRIGORSternessRIGORExtreme hardshipRIGORSPacesRIGORUse of tough standardsRIGORAccuracyRIGORStrictnessRIGORExtreme severityRIGORHardshipRIGORSWhat boot-camp life consists ofRIGORDisciplineRIGORStiffnessRIGORSTough circumstancesRIGORMeticulous natureRIGORDifficultyRIGORQuality of a good math proofRIGORSTrials and tribulationsRIGORSChallengesRIGORAsperityRIGORStrict precisionRIGORDemanding qualityRIGORExacting standardRIGORSStrugglesRIGORHighest scientific standards