On a slant (5)
'on a slant' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for atilt that I've seen before include "Pulled tight" , "Leaning over and nearly falling" , "Listing" , "Hardly straight" , "Inclined" .)
'on a slant' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for skew that I've seen before include "(Make) oblique, slanting" , "Oblique, make crooked" , "Suddenly change direction or position" , "Colour" , "Turn or place at an angle; bias" .)