1. Lasting, open, or operating through the whole night
   "a nightlong vigil"
   - all-night, overnight

See also: long

Encyclopedia: Nightlong

• off-roader
• off-season
• off-site
• off-speed pitch
• off-street
• off-the-clock
• off-the-peg
• off-the-rack
• off-the-shelf
• off-the-shoulder
• off-the-wall
• off-white
• offal
• Offaly
• offbeat
• offcut
• Offenbach
• offence
• offenceless
• offend
• offended
• offender
• offending
• offense
• offenseless