Out of bed with a jump - he's only just made it (7)
I believe the answer is:
upstart
'he's only just made it' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'out of bed with a jump' is the wordplay.
'out of bed' becomes 'up' (synonyms).
'with' is a charade indicator (letters next to each other).
'a jump' becomes 'start' (as in starting or jumping in fear).
'up'+'start'='UPSTART'
Can you help me to learn more?
(Other definitions for upstart that I've seen before include "Person who has suddenly risen in wealth or importance" , "Person recently elevated and arrogant with it" , "pretentious person" , "Person newly risen from the ranks and arrogant" , "Over-assertive newcomer" .)