nectaried, detrained, denigrate, gratineed, inearthed, herniated, tailender, minareted, entrained, pertained, repainted, irredenta, retrained, detainers, resinated, intreated, denitrate.
Your query has returned 249 words, which include anagrams of detainer as well as other shorter words that can be made using the letters included in detainer.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.