Related Clues:

• Krypton, e.g.
• Time of one's life
• Excoriate
• One billion years, in geology
• Quite a while
• Wild party
• Accelerator
• See 44-Across
• Service station offering
• Criticize harshly
• Significant time
• Proposal defeated in 1982
• Guff
• Many millennia
• Mild oath