What is a 6 letter word that end with ed at the end?

seated, heated, looked, called, hooked, united, voted, viewed....

...the list could go on forever.

Just about any four-letter action verb (yep - even the one your thinking of now) can be made past-tense by adding "ed".

Also, there are many six-letter words ending with "ed" which can stand as their own root-word.