Soothfast

Origin

Middle English sothfast from Old English sōþfæst ("true, trustworthy"), from sōþ ("true, sooth") + -fæst from fæst ("firm, secure, fast"). More at sooth, fast

Adjective

adjective

1. actual
2. real
3. based on the truth, true; faithful; honest, veracious
• Sir Walter ScottWhy do not you ... bear leal and soothfast evidence in her behalf, as ye may with a clear conscience?

Adverb

adverb

1. actually; truthfullyI care not if the pomps you show be what they soothfast appear. --Ralph Waldo Emerson.