1. Not likely to be rewarded
   - thankless, unappreciated

See also: unrewarding

• horse-pistol
• horse-race
• horse-trade
• horse-trail
• horseback
• horseback rider
• horseback riding
• horsebean
• horsebox
• horsecar
• horsecloth
• horsefish
• horseflesh
• horsefly
• horsefly weed
• horsehair
• horsehair lichen
• horsehair wig
• horsehead
• horsehide
• horselaugh
• horseleech
• horseless
• horseless carriage
• horseman