1. Conforming to the rules of grammar or usage accepted by native speakers
   - grammatical

Encyclopedia: Well-formed

• box turtle
• box up
• box white oak
• box wrench
• box-shaped
• boxberry
• boxcar
• boxcars
• boxed
• boxed-in
• boxer
• boxers
• boxershorts
• boxfish
• boxful
• boxing
• Boxing Day
• boxing equipment
• boxing glove
• boxing match
• boxing ring
• boxlike
• boxthorn
• boxwood
• boxy