In US, marshy spot in inlet not wholly dismissed (5)
I believe the answer is:
bayou
'in us marshy spot' is the definition.
I can't judge whether this definition defines the answer.
'inlet not wholly dismissed' is the wordplay.
'inlet' becomes 'bay' (I've seen this before).
'not wholly' means to remove the last letter.
'dismissed' becomes 'out' (dismissed in cricket).
'out' with its final letter taken off is 'ou'.
'bay'+'ou'='BAYOU'
'in' is the link.
Can you help me to learn more?
(Other definitions for bayou that I've seen before include "Swamp in Louisiana etc" , "nickname of US State" , "bit of wetland in Texas, eg" , "Marshy outlet" , "US outlet" .)