\Sooth"fast`\, a. [Sooth + fast, that is, fast or firm
with respect to truth.]
Firmly fixed in, or founded upon, the thruth; true; genuine;
real; also, truthful; faithful. [Archaic] --
{Sooth"fast`ness}, n. [Archaic] ``In very soothfastness.''
--Chaucer.
      Why do not you . . . bear leal and soothfast evidence
      in her behalf, as ye may with a clear conscience! --Sir
                                               W. Scott.

\Sooth"fast`\, adv.
Soothly; really; in fact. [Archaic]
      I care not if the pomps you show Be what they soothfast
      appear.                                  --Emerson.