'Sort of' isn't a word! It's more of a phrase, like 'Kind of'. Here's some examples: It's a sort of an ugly dog. and I kind of feel bad about it. 'Sort of' and 'Kind of' are informal fillers to denote something vague.

It means "a little bit" "He is sort of lazy" = "He is a little bit lazy." "I'm sorta hungry" = "I'm a little bit hungry."