I take it you mean 'What is the singular form of the word criteria?' If so, the answer is criterion.
There is no single English word that meets the criteria.
There is no single Scrabble word that fits the criteria.
There is no single English Scrabble word that meets the criteria.
There is no single English Scrabble word that meets the criteria.
No single English Scrabble word meets the criteria.
There is no single English word that meets the criteria.
There is no single English word that meets the criteria.
There is no single English word that meets the criteria.
There is no single English word that meets the criteria.
There is no single English word that meets the criteria.
There is no single English word that meets the criteria.
There is no single English Scrabble word that meets the criteria.