What does "ball of fire" mean?

A person who is especially active, ambitious, hard-working, or high-achieving.

What is a synonym for "ball of fire"?

Common synonyms include: activist, beaver, big time operator, big-time operator, bustler, busy bee.

noun

noun ·Rare ·Advanced level

Noun

1
A person who is especially active, ambitious, hard-working, or high-achieving. idiomatic
""I wonder how fast this feller is? Ever heard?" "They seem to think he's a whirlin' ball of fire, but that don't worry you none, does it?""
2
someone whose career progresses rapidly wordnet
3
a highly energetic and indefatigable person wordnet

""I wonder how fast this feller is? Ever heard?" "They seem to think he's a whirlin' ball of fire, but that don't worry you none, does it?""