rigi-, rig- (Latin: stiff, hard, numb).calcium rigor: 
corrigible: 
de rigueur: 
dirigible: 
frigid: 
frigidity: 
heat rigor: 
incorrigible: 
regescent: 
regiment: 
rigid: 
rigidify: 
rigidity: 
rigidness: 
rigor: 
rigor mortis: 
rigorism: 
rigorist: 
rigorous: 
rigorously: 
rigour: 
water rigor: 
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