1. Memorable for being a special occasion
   "on red-letter nights a large gathering greeted the celebrity"

See also: unforgettable

• abruptly-pinnate leaf
• abruptness
• Abruzzi
• Abruzzi e Molise
• ABS
• abscess
• abscessed
• abscessed tooth
• abscise
• abscissa
• abscission
• abscond
• absconder
• abscondment
• abseil
• abseiler
• absence
• absence seizure
• absence without leave
• absent
• absentee
• absentee ballot
• absentee rate
• absenteeism
• absentia