1. 
[syn: furthermore, moreover, what is more]
The Collaborative International Dictionary of English v.0.48:
Moreover \More*o"ver\, adv. [More + over.]
   Beyond what has been said; further; besides; in addition;
   furthermore; also; likewise.
   [1913 Webster]
         Moreover, he hath left you all his walks. --Shak.
   [1913 Webster]
   Syn: Besides, Moreover.
   Usage: Of the two words, moreover is the stronger and is
          properly used in solemn discourse, or when what is
          added is important to be considered. See Besides.
          [1913 Webster]
WordNet (r) 3.0 (2006):
moreover
    adv 1: in addition; "computer chess games are getting cheaper
           all the time; furthermore, their quality is improving";
           "the cellar was dark; moreover, mice nested there"; "what
           is more, there's no sign of a change" [syn:
           furthermore, moreover, what is more]
Moby Thesaurus II by Grady Ward, 1.0:
38 Moby Thesaurus words for "moreover":
   above, additionally, again, all included, also, altogether,
   among other things, and all, and also, and so, as well, au reste,
   beside, besides, beyond, else, en plus, extra, farther,
   for lagniappe, further, furthermore, in addition, inter alia,
   into the bargain, item, likewise, more, on the side, on top of,
   over, plus, similarly, then, therewith, to boot, too, yet