fear the worst – English Grammar Profiler
Here’s an example of a C2 phrase in the English Vocabulary Profile that means:
worry that something very bad will happen or that something very bad has happened
We fear the worst.
TED
A search for collocates of ‘fear the worst‘ in the NOW corpus:
1 COME 126 2 YET 114 3 BEGAN 59
4 EXPERTS 31
Experts initially feared the worst.
theinformant.co.nz
5 STARTED 27 6 MAKES 24 7 REASON 23 8 FANS 23 9 STARTING 19
10 BEGINNING 16