Crossword Genius

Dynamic individual that one should avoid contact with (4,4)

Ross

I believe the answer is:

live wire

I'm a little stuck... Click here to teach me more about this clue!

This might be a double definition.

'dynamic' is the first definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

'individual that one should avoid contact with' is the second definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see a link between them that I don't see?

Can you help me to learn more?

(Other definitions for live wire that I've seen before include "Energetic and unpredictable person" , "isn't it shocking?" , "Conductor charged with electricity - energetic person" , "Alert and enthusiastic person" , "Brown covering for this" .)

I've seen this clue in The Guardian.
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