1. Consisting of or especially arranged in sets of four
   "quaternate leaves"
   - quaternary

See also: multiple

• nightgown
• nighthawk
• nightie
• nightingale
• nightjar
• nightlife
• nightlong
• nightly
• nightmare
• nightmarish
• nightrider
• nightshade
• nightshirt
• nightspot
• nightstand
• nightstick
• nighttime
• nightwalker
• nightwear
• nightwork
• nighty
• nigra
• nigrescent
• nigrify
• Nigroporus