retreat

retire, retreat, withdraw

这些动词均含“退下、退却”之意。
retire: 指从公开或公共场合退下到私下场所，也指被免除职务或自动辞职、退役等。
retreat: 含消极意味，多指被迫采取退下或退却的行动。
withdraw: 侧重因某种原因而有意离开，常含礼貌、谦恭等理由。也指军队的撤退。

名词 retreat:

1. (military) withdrawal of troops to a more favorable position to escape the enemy's superior forces or after a defeat
2. a place of privacy; a place affording peace and quiet
3. (military) a signal to begin a withdrawal from a dangerous position
4. (military) a bugle call signaling the lowering of the flag at sunset
5. an area where you can be alone
   同义词：hideaway
6. withdrawal for prayer and study and meditation
   同义词：retirement

动词 retreat:

1. pull back or move away or backward
   同义词：withdraw, pull away, draw back, recede, pull back, retire, move back
2. move away, as for privacy
3. move back
   同义词：retrograde
4. make a retreat from an earlier commitment or activity
   同义词：pull back, back out, back away, crawfish, crawfish out, pull in one's horns, withdraw

1. After several reverses the enemy was forced to retreat.
   几经失败之后，敌军被迫后撤。
2. The enemy was forced to retreat.
   敌人被迫撤退。
3. The minister made an undignified retreat from his earlier position.
   那部长很不光彩地背离了他原先的立场。
4. You can't retreat from the responsibility in this affair.
   你不能回避在这一事件中的责任。
5. The troop made good their retreat from the occupied city.
   部队从沦陷的城市安全撤出。
6. The soldiers had to retreat when they were beaten in battle.
   士兵们在战斗中受挫，不得不撤退。

re.treat

n.（名词）

The act or process of withdrawing, especially from something hazardous, formidable, or unpleasant.
撤回：退却的行为或过程，尤指从危险的、可怕的或令人不快的事物中
The process of going backward or receding from a position or condition gained.
撤回原位的过程：从已获得的位置或状况中后移或退却的过程
A place affording peace, quiet, privacy, or security.See Synonyms at shelter
静居处：安泰、宁静、幽僻或安全的地方参见 shelter

A period of seclusion, retirement, or solitude.
引退期间：一段隐居、退隐或独居的时期
A period of group withdrawal for prayer, meditation, and study:
静思，静修：为祈祷、反思和学习的一段集体退隐时期：
例句：
a religious retreat.
宗教静修

Withdrawal of a military force from a dangerous position or from an enemy attack.
安全撤退：从危险位置或敌人攻击中撤退军队
The signal for such withdrawal.
这种撤退的信号
A bugle call or drumbeat signaling the lowering of the flag at sunset, as on a military base.
降旗号：落黄昏时通知降旗的号音或鼓声，如在军事基地上
The military ceremony of lowering the flag.
军队的降旗仪式
v.（动词）
re.treat.ed,re.treat.ing,re.treats
v.intr.（不及物动词）
To fall or draw back; withdraw or retire.See Synonyms at recede
后退或缩回；撤退或退休参见 recede
To slope backward.
向后倾斜
v.tr.Games （及物动词）【游戏】
To move (a chess piece) back.
向后移（棋子）

来源：
Middle English retret
中古英语 retret
from Old French retrait, retret [from past participle of] retraire, retrere [to draw back]
源自 古法语 retrait, retret [] 源自retraire, retrere的过去分词 [缩回]
from Latin retrahere * see retract
源自 拉丁语 retrahere *参见 retract

【引伸】
retreat.er
n.（名词）