Webster's Revised Unabridged Dictionary · 1913

Regress

Regress (r?"gr?s) , noun

[Latin regressus, from regredi, regressus. See Regrede.]

1.
The act of passing back; passage back; return; retrogression. “The progress or regress of man”. — F. Harrison
2.
The power or liberty of passing back. — Shakespeare

Regress (r?*gr?s") , intransitive verb

To go back; to return to a former place or state. — Sir T. Browne