REGRESSED
Verb
regressed
simple past tense and past participle of regress
Adjective
regressed (comparative more regressed, superlative most regressed)
That has been subject to regression
Source: Wiktionary
REGRESS
Re"gress (r"grs), n. Etym: [L. regressus, fr. 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. Shak.
Re*gress" (r*grs"), v. i. [imp. & p. p. Regressed (-grst"); p. pr. &
vb. n. Regressing.]
Definition: To go back; to return to a former place or state. Sir T.
Browne.
Source: Webster’s Unabridged Dictionary 1913 Edition