Daring to come in with pressure increasing (12)
I believe the answer is:
enterprising
'daring' is the definition.
(I've seen this before)
'come in with pressure increasing' is the wordplay.
'come in' becomes 'enter' ('enter' can be a synonym of 'come in'**).
'with' says to put letters next to each other.
'pressure' becomes 'p' (abbreviation).
'increasing' becomes 'rising' (rising is a kind of increasing).
'enter'+'p'+'rising'='ENTERPRISING'
'to' is the link.
(Other definitions for enterprising that I've seen before include "daring" , "Entrepreneurial" , "Go-getting" , "Go ahead" , "Adventurous, resourceful" .)