Not straight
Else clues • Angled
• At an angle
• Biased
• Cockeyed
• Crooked
• Having some inclination
• Leaning
• Like italics
• Like poorly set fence posts
• Like those with poor grades?
• Listing
• Not on the level
• Oblique
• On a bias
• On a tilt
• Sloping
• Tilted