1. Logically valid
   - reasoned, sound

See also: valid

• recidivist
• Recife
• recipe
• recipient
• recipient role
• reciprocal
• reciprocal cross
• reciprocal inhibition
• reciprocal ohm
• reciprocal pronoun
• reciprocal-inhibition therapy
• reciprocality
• reciprocally
• reciprocate
• reciprocating engine
• reciprocating saw
• reciprocation
• reciprocative
• reciprocatory
• reciprocity
• recirculation
• recision
• recission
• recital
• recitalist