"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"
"ill omens"
"ill predictions"
"my words with inauspicious thunderings shook heaven"
"a dead and ominous silence prevailed"
"a by-election at a time highly unpropitious for the Government"
An ominous circumstance that happened the last time we played together.
出自: Goldsmith