The most common and most likely answer to this crossword clue is the 8 letter word HORRIBLE
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More clues leading to the result HORRIBLE
- Dreadful predicament in which one bishop joins another
- Thigh or rib lead housing far from attractive
- Nasty puncture keeps posh car in the same place
- Nasty b-bit of meat cast into pit
- One bishop after another in tricky situation — ghastly!
- Nasty gash around right part of the chest
- Cavity around tip of Rider's bone? That's dreadful!
- Awful run with kid falling in burrow
Buddy explains!

The straight part
We know that "Nasty" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case nasty = horrible.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 HORRIBLE mean?
HORRIBLE noun- A thing that causes horror; a terrifying thing, particularly a prospective bad consequence asserted as likely to result from an act.
- A person wearing a comic or grotesque costume in a parade of horribles.
- Causing horror; terrible; shocking.
- Tremendously bad.