acolyte, airtight, ammonite, andesite, anorthite, anthracite, apartheid, apatite, appetite, backbite, bentonite, biotite, birthright, bullfight, calcite, campsite, canaanite, candlelight, carmelite, cartwright.
Your query has returned 220 words, which include anagrams of gigabytes as well as other shorter words that can be made using the letters included in gigabytes.
The words in this list can be used in games such as Scrabble, Words with Friends, Wordscapes and other similar games.