ancress, caserns, sanders, farness, sangers, harness, arsines, reasons, senoras, snarers, sarsens, sarsnet, rawness, answers.
Your query has returned 56 words, which include anagrams of nasser as well as other shorter words that can be made using the letters included in nasser.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.