1. Characterized by hard work and perseverance
   - industrious, tireless, untiring

See also: diligent

• niche
• Nicholas
• Nicholas I
• Nicholas II
• Nicholas V
• Nicholas Vachel Lindsay
• Nichrome
• nick
• nickel
• nickel alloy
• nickel bronze
• nickel note
• nickel silver
• nickel steel
• nickel-and-dime
• nickel-base alloy
• nickel-cadmium accumulator
• nickel-iron accumulator
• nickel-iron battery
• nickelodeon
• nicker
• nicker nut
• nicker seed
• Nicklaus
• nicknack