Related Clues:

• No 'early-to-bed' type
• One who keeps late hours
• One who doesn't retire early
• Person who likes to be active late into the evening
• Early bird's opposite?
• One up late for nearly the first time
• Spooner's to use 21 on social misfit or clubber
• Late sleeper is close to Welsh lake
• Nocturnal human (with a bird)
• One likes to be active late into the evening
• N.Y.S.E. listing ... also what can fill the square at the crossing of 24-Across and 25-Down
• One stays up late with long novel
• Thin glow, shimmering, reveals one up late
• Not a man for light entertainment?
• Erasure's latest album