- - Diligent worker
- - Overly diligent sort
- - Diligent one.
- - Overzealous one: Slang.
- - Extremely diligent person
- - Can-do person
- - Unusually zealous person
- - Willing worker's average beer supply
- - Alert and energetic person
- - Busy bee
- - Go-getter
- - Zealous sort whose schedule may include 27-, 50- and 64-Across
- - Gung-ho type
- - Ardent rookie.
- - Enthusiast
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