worst fear
noun phraseUK /wɜːst fɪə/
US /wɜːrst fɪr/
The thing you are most scared of.
Her worst fear is speaking in front of the whole class.
OTHER MEANINGS
2. A scary situation you hope never happens.
Losing his dog is his worst fear.
3. The most frightening thing in a story or dream.
In the movie, the hero faces his worst fear in the dark cave.
4. A strong worry about something bad that might happen.
My worst fear is getting lost in a new city.