Like Concorde thus carrying posh individual (10)
I believe the answer is:
supersonic
'like concorde thus carrying posh individual' is the definition.
I can't tell whether this defines the answer.
'thus carrying posh individual' is the wordplay.
'thus' becomes 'sic' ('sic' can be a synonym of 'thus'**).
'carrying' means one lot of letters goes inside another.
'posh' becomes 'u' (abbreviation for upper-class - opposite to non-u).
'individual' becomes 'person' ('person' can be a synonym of 'individual').
'u'+'person'='uperson'
'sic' placed around 'uperson' is 'SUPERSONIC'.
Can you help me to learn more?
(Other definitions for supersonic that I've seen before include "Very fast - 11 (anag)" , "Faster than Mach 1" , "Faster than the speed of sound" , "moving very fast" .)