1. Costing nothing
   - complimentary, free, gratis, gratuitous

See also: unpaid

• Western box turtle
• western buttercup
• Western Cape
• western chimpanzee
• western chokecherry
• Western Church
• Western civilisation
• Western civilization
• western coral snake
• western crab apple
• Western culture
• western dewberry
• Western diamondback
• Western diamondback rattlesnake
• Western Empire
• Western European Summer Time
• western fence lizard
• western gray squirrel
• western grey squirrel
• western hemisphere
• western hemlock
• western holly fern
• Western honey mesquite
• Western Islands
• Western Isles