Related Clues:

• Pothook shapes
• Highway curves
• Ogees, e.g.
• Tricky curves
• Twisting turns
• Satisfactory marks
• Pluralizers
• Doesn't sit tight
• Big section of a dictionary
• Massachusetts quartet
• Parts of some driving tests
• Lispers' dread
• Snake paths
• They're common in Mississippi
• Over 10% of the dictionary