1. Logically valid
   - reasoned, sound

See also: valid

• bridged-T
• buckbean
• buckbean family
• buckboard
• bucked up
• buckeroo
• bucket
• bucket along
• bucket seat
• bucket shop
• bucket truck
• bucketful
• bucketload
• buckeye
• Buckeye State
• bucking bronco
• Buckingham Palace
• Buckinghamshire
• buckle
• buckle down
• buckle under
• buckler
• buckler fern
• buckler mustard
• Buckley's