前缀：abs-

【词根含义】：分离,脱离

【词根来源】：ab-的变体,只用在c和t前。

【同源单词】：abstain, abstention, abstinence, abstract, abstraction

词根：obsol = decay （腐烂）

obsolete 过时的

obsolescent 逐渐被废弃的

前缀：ab-, abs- 加在词根前, 表示"相反, 变坏, 离去"等

abnormal 反常的（ab+normal正常的）

abuse 滥用（ab+use用→用坏→滥用）

absorb 吸收（ab+sorb吸收→吸收掉）

absent 缺席的（ab+sent出现→没有出现→缺席的）

abduct 诱拐（ab+duct引导→引走→诱拐）

abject 可怜的（ab+ject抛→抛掉→可怜的）

abstract 抽象的；心不在焉的（abs+tract拉→被拉开→心不在焉）

abstain 戒绝（abs+tain拿住→不再拿住→戒绝）

abscond 潜逃（abs+cond藏→藏起来→潜逃）

abscind 废除（abs+cind剪切→切掉→废除）

abscise 切除（abs+cise剪→剪掉→切除）

abstinence 节制；禁欲（abs+tin拿住+ense→不在拿住→戒除，禁欲）

词根词缀：a-, ab-, abs-

【来源及含义】Latin: prefix; from, away, away from

【相关描述】This prefix is normally used with elements of Latin and French origins (abs- usually joins elements beginning with c, q, or t).

The form ab- is regularly used before all vowels and h; and it becomes a- before the consonants m, p, and v. The prefix apo- has similar meanings.

This list is a very small sample of the multitudes of a-, ab-, abs- prefixes that are available in dictionaries and those in this unit are only meant to present a few examples.

【同源单词】abampere, abampere centimeter squared, abampere per square centimeter, abarticular, abarticulation, abbreviate

词根词缀：obscen-

【来源及含义】Latin: offensive, disgusting, foul, loathsome, repulsive

【相关描述】Etymology is of obscenus is unknown. There is no authoritative agreement as to the true origin of this Latin element.

【同源单词】antiobscenity, nonobscene, obscene, obscenely, obsceneness, obscenities

词根词缀：obscur-

【来源及含义】Latin: dark, dusky; indistinct, uncertain; unintelligible; vague; ambiguous

【同源单词】Brevis esse laboro, obscurant, obscurant, obscurantism, obscurantist, obscuration

词根词缀：obsolesc-, obsolescent-, obsolet-

【来源及含义】Latin: to wear out, to grow old; to fall into disuse; to grow out of use; elderly, older

【相关词根词缀】 Related "old; old age, elder" units: gero-; presbyo-; sen-; veter-.

【同源单词】obsolesce, obsolesced, obsolescence, obsolescent, obsolescently, obsolescing