Not complex or complicated (6)

I believe the answer is:

simple

'not complex or complicated' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for simple that I've seen before include "Easy; plain" , "Easy; herb" , "Plant with medicinal properties" , "Easy or uncomplicated" , "Mean" .)

I've seen this clue in The Irish Times.

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