Wanderer is negative and angry (5)
I believe the answer is:
nomad
'wanderer' is the definition.
(I know that Nomad is a type of wanderer)
'negative and angry' is the wordplay.
'negative' becomes 'no' (no is a kind of negative).
'and' means one lot of letters go next to another.
'angry' becomes 'mad' (similar in meaning).
'no'+'mad'='NOMAD'
'is' acts as a link.
(Other definitions for nomad that I've seen before include "one of those with no fixed home" , "One travels from place to place with no permanent home" , "Person of no fixed abode" , "Member of travelling people" , "Traveller with no permanent home" .)