Resonable American soldier in pub ... (7)
I believe the answer is:
logical
'resonable american' is the definition.
I can't judge whether this definition defines the answer.
'soldier in pub' is the wordplay.
'soldier' becomes 'GI' (GI can mean a US soldier).
'in' indicates putting letters inside.
'pub' becomes 'local' (one's local pub).
'gi' inserted within 'local' is 'LOGICAL'.
Can you help me to learn more?
(Other definitions for logical that I've seen before include "Correctly thought out" , "Showing rational thought" , "In accordance with reason" , "Sound" , "having good reason" .)