1 | adjective | rigidly accurate; allowing no deviation from a standard 2 | adjective | demanding strict attention to rules and procedures

r'igeruhs (IPA: rˈɪɡɝəs)

rig-or-ous (8 letters | 3 syllables)

strict | stringent | tight

vigorous (based on typical American pronunciation)

rigorously

(none among common words)

Spanish: | riguroso (climate) | severo (climate) | riguroso (measure) | severo (measure) | riguroso (control) | severo (control) | exacto (work) | preciso (work) French: | rigoureux (climate) | rigoureux (measure) | sévère (measure) | rigoureux (control) | sévère (control) | rigoureux (work) | précis (work) Portuguese: | rigoroso (climate) | severo (climate) | rigoroso (measure) | severo (measure) | rigoroso (control) | severo (control) | preciso (work) | exato (work) | rigoroso (work) German: | rau° (climate) | streng (climate) | streng (measure) | strikt (measure) | rigoros (measure) | streng (control) | strikt (control) | rigoros (control) | exakt (work) | akkurat (work) Japanese: | 酷 (adjectival nouns) | 凛冽 (adjectival nouns) | 凛烈 (adjectival nouns) | 峻厳 (adjectival nouns)

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Disciplined (based on all New York Times crossword puzzles 1994 to 2009)

9 (International English) | 9 (North American English)