Royal family toured abroad, exuding energy (5)

I believe the answer is:

tudor

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'royal family' is the definition.
(Tudor is an example)

I don't understand how the rest of the clue works.

(Other definitions for tudor that I've seen before include "Elizabeth I of England was of this royal family" , "Dynasty on the English throne 1485-1603" , "Rose" , "Half-timbered-house style" , "Welsh royal family" .)

I've seen this clue in The Times.

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