I note contest involving league is ongoing? (10)
I believe the answer is:
incomplete
'ongoing?' is the definition.
Both the answer and definition are adjectives. Maybe there's an association between them I don't understand?
'i note contest involving league' is the wordplay.
'i note' becomes 'in' (this could be a standard abbreviation I've not previously seen).
'contest' becomes 'compete' (I've seen this before).
'involving' means one lot of letters goes inside another.
'league' becomes 'l' (abbreviation).
'compete' going around 'l' is 'complete'.
'in'+'complete'='INCOMPLETE'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for incomplete that I've seen before include "Inadequate" , "not sufficient" , "Lacking" , "Not yet finished" , "Wanting" .)