Suggesting that something unpleasant is likely to happen. (Cambridge Dictionary)
If you describe something as ominous, you mean that it worries you because it makes you think that something unpleasant is going to happen. (Collins Dictionary)
Giving the worrying impression that something bad is going to happen; threateningly inauspicious. (Oxford Dictionaries)
Being or exhibiting an omen: Portentous. (Merriam – Webster)
Ominous. Your Dictionary.
A simple text message, an ominous meaning.
It’s a texting session between two student friends that you just don’t see every day.
Three days after the Boston Marathon bombings shook the foundations of safety in Boston and beyond, 19-year-old Dias Kadyrbayev texted his college buddy Dzhokhar Tsarnaev and made a quick observation.