anticlimactic, chiropractic, climactic, didactic, galactic, lactic, prophylactic, prophylactic, syntactic, tactic.
Your query has returned 447 words, which include anagrams of extragalactic as well as other shorter words that can be made using the letters included in extragalactic.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.