Emmett can mean universal, truth, or ant. Besides Emmett and Emma, there are a few names that share the same meanings.
Names that mean truth include Verity, Alethea, Dharma, Viera, Farouk, Makoto, Satya, Alice, and Arachne.
There are also plenty of names that mean universal or are related. These include Immilla, Ermentrude, Berger, Don, and Erielle. There are not many names that mean ant like Emmett.