sinister
adjective
[ ˈsɪnɪstə ]
• giving the impression that something harmful or evil is happening or will happen.
• "there was something sinister about that murmuring voice"
Similar:
menacing,
threatening,
ominous,
forbidding,
baleful,
frightening,
eerie,
alarming,
disturbing,
disquieting,
dark,
black,
suggestive of evil,
evil-looking,
ill-omened,
inauspicious,
unpropitious,
portentous,
eldritch,
spooky,
scary,
creepy,
minatory,
minacious,
minatorial,
bodeful,
direful,
sinistrous,
• of, on, or towards the left-hand side (in a coat of arms, from the bearer's point of view, i.e. the right as it is depicted).
Origin:
late Middle English (in the sense ‘malicious, underhand’): from Old French sinistre or Latin sinister ‘left’.