Capacity for Americans to join together precisely (9)
I believe the answer is:
literally
'precisely' is the definition.
(I've seen this before)
'capacity for americans to join together' is the wordplay.
I cannot quite understand how this works, but
'join' could be 'ally' (I've seen this before) and 'ally' is located in the answer.
The remaining letters 'liter' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for literally that I've seen before include "According to the letter, exactly" , "Exactly as stated" , "According to the precise meaning of words" , "Not figuratively" , "Actually, really" .)