Related Clues:
- Listless on reflection for long period
- Long, long, long time
- Seemingly endless span
- Hard-to-imagine period
- Near-infinite time span
- Very long Supergrass song?
- Unbearable waits
- Awfully long stretch
- Phanerozoic, for one
- Very long periods
- Centuries upon centuries
- Immense spans
- Individual bringing up rear for a very long time!
- Great spell
- Working to bring game opponents together for long periods