sinister
adjective
sin·is·ter
ˈsi-nə-stər
archaic sə-ˈni-
1
: singularly evil or productive of evil
2
: accompanied by or leading to disaster
3
: presaging ill fortune or trouble
4
a
: of, relating to, or situated to the left or on the left side of something
especially
: being or relating to the side of a heraldic shield at the left of the person bearing it
b
: of ill omen by reason of being on the left
5
archaic
: unfavorable, unlucky
6
archaic
: fraudulent
sinisterly
adverb
sinisterness
noun
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Merriam-Webster unabridged
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