Preferably give passport to emissary outside gathering everything (7)
I believe the answer is:
ideally
'preferably' is the definition.
Both the answer and definition are adverbs. Perhaps you can see an association between them that I don't see?
'passport to emissary outside gathering everything' is the wordplay.
'passport' becomes 'id' (a passport is identification).
'to emissary' becomes 'envoy' (synonyms).
'outside' says to hollow out the word (remove centre letters).
'gathering' indicates putting letters inside (gather can mean to acquire or bring in).
'everything' becomes 'all' (all things).
'envoy' with its middle taken out is 'ey'.
'ey' enclosing 'all' is 'eally'.
'id'+'eally'='IDEALLY'
'give' acts as a link.
Can you help me to learn more?
(Other definitions for ideally that I've seen before include "for best results" , "In the most perfect way" , "In the perfect case" , "In the best of all possible worlds" , "In a perfect world, the best possible situation" .)