Definition of oblique

• a. - Not erect or perpendicular; neither parallel to, nor at right angles from, the base; slanting; inclined.
• a. - Not straightforward; indirect; obscure; hence, disingenuous; underhand; perverse; sinister.
• a. - Not direct in descent; not following the line of father and son; collateral.
• n. - An oblique line.
• v. i. - To deviate from a perpendicular line; to move in an oblique direction.
• v. i. - 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.