1. Make worse or less effective
   "His vision was impaired" 
2. Make imperfect
   - mar, spoil, deflower, vitiate

Derived forms: impairing, impaired, impairs

See also: impairer, impairment

Type of: damage

• blackstrap
• blacktail
• blacktail deer
• blacktail jackrabbit
• blacktail prairie dog
• blackthorn
• blacktip shark
• blacktop
• blacktopping
• Blackwall hitch
• blackwash
• blackwater
• blackwater fever
• blackwood
• blackwood tree
• bladder
• bladder campion
• bladder cherry
• bladder disorder
• bladder fern
• bladder fucus
• bladder ketmia
• bladder senna
• bladder sphincter
• bladder stone