Wordnet 3.0
ADVERB (2)
1.
in a false manner intended to mislead;
2.
in a fictional manner (created by the imagination);
The Collaborative International Dictionary of English v.0.48:
Fictitious \Fic*ti"tious\, a. [L. fictitius. See Fiction.]
Feigned; imaginary; not real; fabulous; counterfeit; false;
not genuine; as, fictitious fame.
[1913 Webster]
The human persons are as fictitious as the airy ones.
--Pope.
-- Fic*ti"tious*ly, adv. -- Fic*ti"tious*ness, n.
[1913 Webster]
WordNet (r) 3.0 (2006):
fictitiously
adv 1: in a false manner intended to mislead
2: in a fictional manner (created by the imagination)