1. Logically valid
   - reasoned, sound

See also: valid

• Nicaraguan
• Nicaraguan capital
• Nicaraguan monetary unit
• niccolite
• Niccolo Machiavelli
• Niccolo Paganini
• nice
• nice-looking
• nicely
• Nicene
• Nicene Creed
• niceness
• nicety
• niche
• Nicholas
• Nicholas I
• Nicholas II
• Nicholas V
• Nicholas Vachel Lindsay
• Nichrome
• nick
• nickel
• nickel alloy
• nickel bronze
• nickel note