garbologist /gär-bolˈə-jist/ (US)

1. A dustman, garbage-collector (facetious)
2. Someone who studies a society's waste materials in order to make deductions about the lifestyles of its people

• sharpens
• sharper
• sharpers
• sharpest
• sharp-eyed
• sharp-ground
• sharpie
• sharpies
• sharping
• sharpings
• sharpish
• sharp-looking
• sharply
• sharpness
• sharpnesses
• sharp-nosed
• sharp-pointed
• sharp practice
• sharp practices
• sharps
• sharp-set
• sharp-shod
• sharpshooter
• sharpshooters
• sharpshooting