Leaders of Democrats edgily notice tyrannous ruler (6)

I believe the answer is:

despot

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'tyrannous ruler' is the definition.
'despot' can be an answer for 'ruler' (despot is a kind of ruler). I am not certain of the 'tyrannous' bit.

'leaders of democrats edgily notice' is the wordplay.
'leaders of' indicates taking the first letters.
'notice' becomes 'spot' (spot can mean to notice or observe).
The initial letters of 'democrats edgily' is 'de'.
'de'+'spot'='DESPOT'

Can you help me to learn more?

(Other definitions for despot that I've seen before include "Posted (anag)" , "Possibly 4 [CZAR]" , "Tyrant, dictator" , "Tyrannical dictator" , "Caesar for one" .)

I've seen this clue in The Guardian.

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