Definition of oblique:
not erect or perpendicular; neither parallel to, nor at right angles from, the base; slanting; inclined; not straightforward; indirect; obscure; hence, disingenuous; underhand; perverse; sinister
"it has a direction oblique to that of the former motion. - Cheyne."
an oblique line; the punctuation sign "/"
to deviate from a perpendicular line; to move in an oblique direction; to march in a direction oblique to the line of the column or platoon; -- formerly accomplished by oblique steps, now by direct steps, the men half- facing either to the right or left
"projecting his person towards it in a line which obliqued from the bottom of his spine. - Sir. W. Scott."