Generosity not enough in order to cover a royal grand excursion at first (8)
I believe the answer is:
largesse
'generosity' is the definition.
(I've seen this before)
'not enough in order to cover a royal grand excursion at first' is the wordplay.
'not enough in order' becomes 'less' (I can't explain this - if you can you should believe this answer much more).
'to cover' indicates putting letters inside.
'royal' becomes 'r' (abbreviation).
'grand' becomes 'g' (synonyms).
'at first' indicates taking the first letters.
The first letter of 'excursion' is 'e'.
'a'+'r'+'g'='arg'
'less' placed around 'arg' is 'largess'.
'largess'+'e'='LARGESSE'
Can you help me to learn more?
(Other definitions for largesse that I've seen before include "Generosity in giving gifts" , "Generosity in gift-giving" , "Generous offering" , "Generous disposal of gifts" , "Bounty, gift" .)