1. Not brought about by coercion or force
   - uncoerced, willing 
2. Not resulting from undue effort; not forced
   "a voice with a pleasingly unforced quality"
   - unstrained

See also: effortless, voluntary

• worker
• worker bee
• workfare
• workfellow
• map-reader
• mapinguari
• maple
• maple family
• maple sugar
• maple syrup
• maple syrup urine disease
• maple-leaf
• maple-leaf begonia
• maple-leaved bayur
• maplelike
• mapmaking
• mapper
• mapping
• mapquest
• Maputo
• maquette
• maquiladora
• maquillage
• Maquis
• Maquisard