名詞 regress:

1. the reasoning involved when you assume the conclusion is true and reason backward to the evidence
   同義詞：reasoning backward
2. returning to a former state
   同義詞：regression, reversion, retrogression, retroversion

動詞 regress:

1. go back to a statistical means
2. go back to a previous state
   同義詞：revert, return, retrovert, turn back
3. get worse or fall back to a previous condition
   同義詞：retrograde, retrogress
4. go back to bad behavior
   同義詞：relapse, lapse, recidivate, retrogress, fall back

1. Many prisoners, on being freed, regress to a life of crime.
   許多囚犯，一旦獲釋，仍去犯罪。
2. Many men, when very angry, regress to their childhood and show their bad temper by shouting and stamping their feet.
   很多人，盛怒之下又退回到孩提時代，邊大喊大叫邊跺腳地發(fā)脾氣。

re.gress

v.（動詞）
re.gressed,re.gress.ing,re.gress.es
v.intr.（不及物動詞）
To go back; move backward.
退回；回歸
To return to a previous, usually worse or less developed state.
退回到以前的，通常是更差的或較不發(fā)達的狀態(tài)
To have a tendency to approach or go back to a statistical mean.
退步：接近或退回到一個統(tǒng)計方式的
v.tr.Psychology （及物動詞）【心理學】
To induce a state of regression in.
引發(fā)退步的狀態(tài)
n.（名詞）

The act of going or coming back; return.
回歸的動作；回歸
Passage back; reentry.
退路；再次進入
The act of reasoning backward from an effect to a cause.
逆向思維：從結果到原因的推理的動作

來源：
Latin regredo regress-
拉丁語 regredo regress-
re- [re-]
re- [前綴re-]
grado [to go] * see ghredh-
grado [走] *參見 ghredh-

【引伸】
regres.sor
n.（名詞）