Related Clues:
- Wildness
- Fervency
- Devotion, and then some
- Excessive interest
- Excessively intense enthusiasm
- Beatles phenomenon, e.g.
- Cacoëthes
- Dynamism
- Strong feeling
- Intense obsession
- Reaction to the Beatles, once
- Get-up-and-go attribute
- Something caused by the Beatles or Pokemon
- Enthusiastic devotion
- It's all the rage