baleful (
http://definr.com/baleful)
adj 1: deadly or sinister; "the Florida eagles have a fierce
baleful look" [syn:
baneful]
2: threatening or foreshadowing evil or tragic developments; "a
baleful look"; "forbidding thunderclouds"; "his tone
became menacing"; "ominous rumblings of discontent";
"sinister storm clouds"; "a sinister smile"; "his
threatening behavior"; "ugly black clouds"; "the situation
became ugly" [syn:
forbidding,
menacing,
minacious,
minatory,
ominous,
sinister,
threatening,
ugly]