operate (seven letter word - not six!)

Lots and lots of six letter words can be created from the seven letters given in your question.

If this is really what you need then visit one of the many anagram sites on the WWW.

Input six of the seven letters simply missing out one letter in turn and see what the response is.

(When inputting you can skip missing out the second "e" as all possible solutions will have been supplied when the first "e" was omitted.)