Manifesting, exercising, or favoring rigor; allowing no abatement or mitigation; scrupulously accurate; exact; strict; severe; relentless; as, a rigorous officer of justice; a rigorous execution of law; a rigorous definition or demonstration.
Severe; intense; inclement; as, a rigorous winter.
You got to be rigorous in your appraisal system. The biggest cowards are managers who don't let people know where they stand. Jack Welch
To take photographs means to recognize - simultaneously and within a fraction of a second - both the fact itself and the rigorous organization of visually perceived forms that give it meaning. It is putting one's head, one's eye and one's heart on the same axis. Henri Cartier-Bresson
I went to Columbia University because I knew I wanted to go to a school that was academically rigorous. I prided myself on getting good grades, but I also hated it. Ezra Koenig
Billions are wasted on ineffective philanthropy. Philanthropy is decades behind business in applying rigorous thinking to the use of money. Michael Porter
Conservatism has had from its inception vigorously positive, intellectually rigorous agenda and thinking. That agenda should have in my three pillars: strengthen the economy, strengthen our security, and strengthen our families. Mitt Romney
rigorous in Dutch is streng, wettisch, gestreng, strikt
rigorous in Finnish is ankara
rigorous in French is rigoureux
rigorous in German is hart, hart, streng
rigorous in Italian is severo
rigorous in Spanish is riguroso