Underdog sloshed but connected to reality (8)
I believe the answer is:
grounded
'connected to reality' is the definition.
I can't tell whether this definition defines the answer.
'underdog sloshed' is the wordplay.
'sloshed' is an anagram indicator.
'underdog' anagrammed gives 'GROUNDED'.
'but' acts as a link.
Can you help me to learn more?
(Other definitions for grounded that I've seen before include "Not allowed to fly" , "Earthed" , "prevented from leaving home" , "Punished teenager by confining to house - poor underdog" , "Prevented from flying" .)