Source : Webster's Revised Unabridged Dictionary (1913)

Meticulous \Me*tic"u*lous\, a. [L. meticulosus, fr. metus fear:
   cf. F. m['e]ticuleux.]
   Timid; fearful. -- {Me*tic"u*lous*ly}, adv.

Source : WordNet®

meticulously
     adv : in a meticulous manner; "the set was meticulously authentic"