词根：quit = free, release, release 自由, 释放, 免除
来源于古法语或中古拉丁语 quiter,quietus 释放,休息
助记：波的能量被释放后，威力也相当大：und,kymo 波，分别来源于拉丁语 unda 和希腊语，如：inundate 泛滥、redundant 多余的、kymogram 记波图。
同源词：
1. quit
v.放弃,停止,离开,辞职
2. acquit [ac- 强调 + quit 释放 → 法院都宣告无罪了，他当然要被释放了→]
v.宣告无罪,表现
3. acquittal [ac- 强调 + quitt = quit 释放 + -al表名词 → ]
n. 宣告无罪；（义务、职责等的）履行； 尽职； <古>（债务等的）清偿
4. requital [re- 回 + quit 免除 + -al 后缀 →]
n.报答,酬劳
5. quitclaim []
放弃权利,放弃合法权利
6. requite [re- 回 + quit 免除 + -e (v.) 动词后缀 → 免除了又回来 →]
v.回报,报以，报答,酬劳
7. unrequited [un-无，不 + re- 回 + quit 免除 + -ed 后缀 → 形容无法得到自由的 → ]
adj. 无回报的
词根：und, ound = wave 波浪
来自拉丁语的und意为wave。
同源词：
1. abound [用力荡漾ab(=intensive, away)+und(=wave)]/[ab-加强语义；und, ound=wave, flow波浪，流→水量大→量多，丰富，充裕]
adj.in/with+sth大量存在；富于；充满
This section of town abounds with ltalian restaurants.（这个城区有很多意大利餐厅。）
2. inundate [in(=on．in) 入 +und(=wave)波浪-->流 + -ate动词后缀,大量的水“流入”-->]
v. 泛滥，淹没;压倒；使应接不暇
inundation泛滥，洪水；压倒；应接不暇
In September of 1999．floods inundated many Nigerian villages.（1999年9月，尼日利亚的许多村庄被洪水淹没。）
3. redundant [继续荡漾的 red<re(=back，again)+und(=wave) + ant 形容词后缀]
n. 多余的，过剩的,累赘的
Stop berating me! You' re being redundant.（不要再责备我了！你太哆唆了。）
4. undulate [und波浪 + -u- 连接字母 + ulate=ate表动作, -ate 动词兼形容词后缀]
v. / adj.（表面）呈波浪形；波动，起浪；起伏
undulation n. [见上，-ation 名词后缀]波动；起伏
5. fecundity (fec=fic做+und波动+ity表名词→出产的[粮食]像波浪→丰富,富饶)
n.生产力;丰富,富饶
6. abund [ab+cund[=und]参考；abundant]
v.丰富，充满
abundance n.[见上，-ance 名词后缀] 丰富
abundant adj. [见上，-ant 形容词后缀] 丰富的
abundantly adv. [见上，-ly 副词后缀] 丰富地
7. redound （red回+ound[=und]→波动回来→回流；产生影响）
v. 回流；起作用
8. superabound [super 超，过 + abound 多]
v.极多，过多，过剩
superaboundant adj. [见上，-ant 形容词后缀] 过多的，过剩的
词根：und = wave, 表示“波动”
abundant a. 丰富的（ab加强+und+ant→[多得]象波浪一样→丰富的）
abundance n. 丰富，富裕
undulate v. 波动（und+ulate表动作+波动）
inundate v. 泛滥，淹没（in进入+und+ate→进入波浪→淹没）
redundant a. 多余的（red反复+und+ant→反复波动→多余的）
fecundity n. 多产，富饶（fec做+und+ity→出产的[粮食]像波浪→富饶）
abund v. 丰富，充满（ab+cund[=und]参考；abundant）
redound v. 回流；起作用（red回+ound[=und]→波动回来→回流；产生影响）
词根词缀：-ess
【来源及含义】Greek -issa > Late Latin -issa > Old French -esse > Middle English -esse: a suffix that forms nouns meaning a female +++, as in lioness, tigress, heiress, hostess, and sculptress
【相关描述】When -ess is added to a noun ending in -tor, -ter, the vowel before r is generally elided (eliminated or left out), as in actress (actor + -ess); and such a derivative with the ending -tress (often equivalent to French ) is usually considered a reduced form of Latin -trix, -tricem and popularly regarded as the equivalent of -tor + -ess.
In Middle English many words in -esse were adopted from French; such as, countess, duchess, mistress, and princess, or formed on nouns in -er; such as, enchantress and sorceress.
The suffix -ess is diminishing from English usage, with trends or tendencies toward avoiding any unnecessary references to gender or sexual categorizing (feminine or masculine.
The suffixes -er and -or are no longer gender-specific in modern English: an author or manager, like a doctor or writer, may be male or female, so the words authoress and manageress are considered redundant.
Some -ess words remain in use; for example, heiress and actress, although actor is being used more often now for both men and women.
【同源单词】actress, adulteress, adventuress, ancestress, auditress, aviatress
词根词缀：perisso-, periss-
【来源及含义】Greek: extraordinary; superfluous, redundant; odd, odd-numbered
【同源单词】perissodactyl, Perissodactyla, perissodactylism, perissodactylous, perissology, perissoped
词根词缀：tauto-, taut-
【来源及含义】Greek: same
【相关词根词缀】 Inter-related cross references, directly or indirectly, involving word units dealing with "equal, identical, same, similar": auto-; emul-; equ-, equi-; homeo-; homo-; iso-; pari-; peer; rhomb-; syn-.
【同源单词】redundancies, tautegorical, tautochrome, tautochromism, tautochrone, tautochronism