American English

Definition of sinister adjective from the Oxford Advanced American Dictionary

 

sinister

 adjective
adjective
NAmE//ˈsɪnəstər//
 
 
jump to other results
seeming evil or dangerous; making you think something bad will happen There was something cold and sinister about him. There is another, more sinister, possibility. We needn't assume that there was a sinister motive for what she did.
See the Oxford Advanced Learner's Dictionary entry: sinister