Foreboding is a strong feeling that something bad is about to happen. It's that heavy, uneasy sensation in your stomach when dark clouds gather before a storm, or the worry you feel walking into a classroom when you suddenly remember there might be a pop quiz you didn't study for.

A foreboding isn't based on clear evidence: it's more like an instinct or premonition that trouble is coming. You might feel a sense of foreboding when you hear your parents using serious voices in the other room, or when you notice your best friend avoiding eye contact after school. In stories, authors often create foreboding through ominous details like creaking floorboards, flickering lights, or an unusually quiet forest.

The word can also describe something that creates this feeling. A foreboding sky looks dark and threatening. A foreboding silence feels heavy with unspoken tension. Unlike simple worry, which might focus on a specific concern, foreboding is broader and more atmospheric: a general dread that hangs in the air like fog.

Sometimes foreboding turns out to be wrong, just your imagination working overtime. But other times, that uncomfortable instinct is your mind noticing subtle warning signs before you consciously understand what's happening.