From WordNet (r) 2.0 (August 2003) [wn]:
genuinely
adv 1: in accordance with truth or fact or reality; "she was now
truly American"; "a genuinely open society"; "they
don't really listen to us" [syn: truly, really]
2: genuinely; with authority; "it is authentically British"
[syn: authentically]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
genuine \gen"u*ine\, a. [L. genuinus, fr. genere, gignere, to
beget, in pass., to be born: cf. F. g['e]nuine. See
Gender.]
Belonging to, or proceeding from, the original stock; native;
hence, not counterfeit, spurious, false, or adulterated;
authentic; real; natural; true; pure; as, a genuine text; a
genuine production; genuine materials. "True, genuine night."
--Dryden.
Syn: Authentic; real; true; pure; unalloyed; unadulterated.
See Authentic. -- Gen"u*ine*ly, adv. --
Gen"u*ine*ness, n.
[1913 Webster]
The evidence, both internal and external, against
the genuineness of these letters, is overwhelming.
--Macaulay.
[1913 Webster]