The most common and most likely answer to this crossword clue is the 6 letter word DREADS
I've seen this crossword clue in Independent
D
R
E
A
D
S
More clues leading to the result DREADS
- Fears engendered by adders possibly
- Is very nervous of locks
- Type of locks in frame of doors protecting study
- Fears what hairstylist might produce
- Fears having to deal with old man’s trousers
- Inside, doctors are cooking quails
- Worries about being sadder after mishap
- Has great fear of wild adders
- Fears medic will encounter cases of extra drunkenness
- Old men gathering on subject of hairstyle
Buddy explains!

The straight part
We know that "Fears" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fears = dreads.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DREADS mean?
DREADS noun- A Rastafarian person.
- Dreadlocks
- To fear greatly.
- To anticipate with fear.
- To be in dread, or great fear.
- To style (the hair) into dreadlocks.