Matey only accommodating one in taxi (8)
I believe the answer is:
sociable
'matey' is the definition.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for sociable that I've seen before include "Fond of mixing with others" , "Fond of others' company" , "Companionable, friendly" , "Marked by friendliness" , "Friendly and pleasant" .)