soothfast

sooth·fast

S0564800 (so͞oth′făst′)adj. Archaic 1. Truthful; honest.2. True; real.
[Middle English sothfast, from Old English sōthfæst : sōth, truth; see sooth + fæst, fixed, fast; see fast1.]

soothfast

(ˈsuːθˌfɑːst) adj1. truthful2. loyal; true[from Old English sōthfæst; see sooth, fast1]

sooth•fast

(ˈsuθˌfæst, -ˌfɑst)

adj. Archaic. 1. based on the truth; true. 2. truthful; veracious. [before 900; Old English sōthfæst]