Very, very (6)
'very very' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for extremely that I've seen before include "To a high degree or extent" , "remarkably" .)
'very very' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ultra that I've seen before include "extraordinary" , "lacking moderation" , "Saharan dweller" , "Extreme - extremist" , "Fanatic" .)