WordNet (r) 3.0 (2006):

for example
    adv 1: as an example; "take ribbon snakes, for example" [syn:
           for example, for instance, e.g.]

Moby Thesaurus II by Grady Ward, 1.0:

18 Moby Thesaurus words for "for example":
   a propos, apropos, apropos of, as, as an example, as an instance,
   by the by, by the way, en passant, exempli gratia, for instance,
   in passing, incidentally, par exemple, parenthetically,
   speaking of, thus, to illustrate