Definition of sanguinary adjective from the Oxford Advanced Learner's Dictionary

 

sanguinary

 adjective
adjective
BrE BrE//ˈsæŋɡwɪnəri//
 
; NAmE NAmE//ˈsæŋɡwɪneri//
 
(formal)
 
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involving or liking killing and blood sanguinary revenge sanguinary fanatics a sanguinary campaign in which thousands were killed Word Origin Middle English (in the sense ‘relating to blood’): from Latin sanguinarius, from sanguis, sanguin- ‘blood’.
See the Oxford Advanced American Dictionary entry: sanguinary