Crossword Genius

Certain moves not nice — steady (13)

Ross

I believe the answer is:

incontestable

'certain' is the definition.
(thesaurus)

'moves not nice steady' is the wordplay.
'moves' indicates an anagram.
'steady' becomes 'stable' ('stable' can be similar in meaning to 'steady'**).
'not'+'nice'='notnice'
'notnice' anagrammed gives 'inconte'.
'inconte'+'stable'='INCONTESTABLE'

(Other definitions for incontestable that I've seen before include "Beyond dispute" , "Without doubt" , "sure" .)

I've seen this clue in The Times.
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