Not on a tilt (5)
I believe the answer is:
level
(Other definitions for level that I've seen before include "Device ot establish a flat surface" , "Not in front or behind" , "Flat, even" , "Come clean" , "Flat and smooth" .)
I believe the answer is:
level
(Other definitions for level that I've seen before include "Device ot establish a flat surface" , "Not in front or behind" , "Flat, even" , "Come clean" , "Flat and smooth" .)