Hairy party hosts gall you and me (9)
I believe the answer is:
dangerous
'hairy' is the definition.
(hairy can informally mean dangerous or hazardous)
'party hosts gall you and me' is the wordplay.
'party' becomes 'do' (do can informally mean a party).
'hosts' is an insertion indicator (inserted letters are welcomed or hosted).
'gall you' becomes 'anger' (I can't explain this - if you can you should believe this answer much more).
'and' is a charade indicator (letters next to each other).
'me' becomes 'us' ('us' can mean 'me' in some dialects).
'do' enclosing 'anger' is 'dangero'.
'dangero'+'us'='DANGEROUS'
Can you help me to learn more?
(Other definitions for dangerous that I've seen before include "Unsafe, risky" , "Hazardous" , "Hairy" , "posing a threat" , "Perilous, unsafe" .)