1. Tending to hinder the achievement of a goal

See also: harmful

• spiny anteater
• spiny dogfish
• spiny lizard
• spiny lobster
• spiny puffer
• spiny softshell
• spiny talinum
• spiny-backed
• spiny-edged
• spiny-finned
• spiny-finned fish
• spiny-headed worm
• spiny-leafed
• spiny-leaved
• spiny-stemmed
• SPipistrellus hesperus
• spiracle
• spiracular
• spiraea
• Spiraea prunifolia
• spiral
• spiral bandage
• spiral galaxy
• spiral nebula
• spiral ratchet screwdriver