dysphemism /disˈfə-mi-zm/

1. The replacing of a mild or inoffensive word or phrase by an offensive one
2. The offensive word or phrase substituted

• tree stumps
• tree surgeon
• tree surgeons
• tree surgeries
• tree surgery
• tree toad
• tree toads
• tree tomato
• tree tomatoes
• treetop
• treetops
• tree trunk
• tree trunks
• tree worship
• tree worshipper
• tree worshippers
• tref
• trefa
• trefoil
• trefoiled
• trefoils
• tregetour
• tregetours
• trehala
• trehalas