Team sink badly being wide of the mark (8)
I believe the answer is:
mistaken
'wide of the mark' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?
'team sink badly' is the wordplay.
'badly' indicates an anagram.
'team'+'sink'='teamsink'
'teamsink' with letters rearranged gives 'MISTAKEN'.
'being' acts as a link.
Can you help me to learn more?
(Other definitions for mistaken that I've seen before include "Wrong in opinion, judgment etc." , "In error in mankiest way" , "Wrong-headed" , "Wrong (in judgement)" , "'Wrong, misguided (8)'" .)