Crossword Genius

Series lacks power to satisfy (4)

Ross

I believe the answer is:

sate

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'to satisfy' is the definition.
(I've seen this in another clue)

I don't understand the remainder of the clue.

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(Other definitions for sate that I've seen before include "Fill to repletion" , "Satisfy - surfeit" , "Fulfil to excess" , "Satisfy to the full" , "Fill totally" .)

I've seen this clue in The Irish Times.
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