[1] : The Collaborative International Dictionary of English v.0.48

than \than\, adv.
   then. see then. obs. --gower.
   1913 webster

         thanne longen folk to gon on pilgrimages. --chaucer.
   1913 webster
see also:
then 

[2] : The Collaborative International Dictionary of English v.0.48

than \than\ tha^n, conj. oe. than, thon, then, thanne,
   thonne, thenne, than, then, as. ethanne, ethonne,
   ethaenne; akin to d. dan, ohg. danne, g. dann then, denn
   than, for, goth. thornan then, and to e. the, there, that.
   see that, and cf. then.
   a particle expressing comparison, used after certain
   adjectives and adverbs which express comparison or diversity,
   as more, better, other, otherwise, and the like. it is
   usually followed by the object compared in the nominative
   case. sometimes, however, the object compared is placed in
   the objective case, and than is then considered by some
   grammarians as a preposition. sometimes the object is
   expressed in a sentence, usually introduced by that; as, i
   would rather suffer than that you should want.
   1913 webster

         behold, a greater than solomon is here.  --matt. xii.
                                                  42.
   1913 webster

         which when beelzebub perceived, than whom,
         satan except, none higher sat.           --milton.
   1913 webster

         it's wiser being good than bad;
         it's safer being meek than fierce;
         it's fitter being sane than mad.         --r. browning.
   1913 webster
see also:
that then 

[3] : Moby Thesaurus II by Grady Ward, 1.0

36 moby thesaurus words for "than":
   alias, as compared with, aside from, bar, barring, beside, besides,
   by comparison with, compared with, contrarily, else, elsewise, ex,
   except, except for, excepting, excluding, exclusive of,
   in comparison with, in other respects, in other ways, leaving out,
   let alone, omitting, or else, other than, otherwise, outside of,
   over against, precluding, save, save and except, saving,
   taken with, unless, without

More Than >> M Words
More Than, definition of term: More Than
more+than_pag1.html

Less Than >> L Words
Less Than, definition of term: Less Than
less+than_pag1.html

Greater Than >> G Words
Greater Than, definition of term: Greater Than
greater+than_pag1.html