dereliction ；

[例句] 原始取得包括造物, 占有无主物. Original acquisition comprises making things , taking possession of ownerless things.

[例句] 这儿无主的狗真多 呀 ! What a lot of ownerless dogs there are here!

hurtless，innocuous，[医] innocent，innoxious，inoffensive ；

[例句] 在所有简单无害的娱乐项目背后都隐藏着危险，特别是对儿童而言。 Under all the innocent fun, there are hidden dangers, especially for children.

[例句] 即使无害的物质在药物测试中有时也会呈阳性. Even innocuous substances can sometimes register a positive result in a drug test.

inapproachable，invincible，matchless，unbeatable，unequaled ；

[例句] 这支足球队曾被誉为无敌的劲旅. This football team was once reputed to be invincible.

[例句] 沃德并不是发挥最稳定的球员，可是一旦进入状态，他似乎就是天下无敌的王者。 Ward is not the most consistent of players, but when he is on song he looks a world-beater.

unrestrained，unconstrained，uncontrolled，unconfined，unrestraint ；

[例句] 他认为 “ 无拘束的妇女 ” 只是家族的传奇. His opinion of " loose women " was legendary in the family.

[例句] 有爱的无拘束行为是美丽的. Familiar acts are beautiful through love.

aeriform，bodiless，[经] intangible，immaterial，invisible ；

[例句] 父母担心他们可能会逾越这些无形的界限。 Parents fear they might overstep these invisible boundaries.

[例句] 身体是物质的,但灵魂是无形的. The body is material but the soul is immaterial.

unpowered ；

[例句] 目前, 除了增发题材外, 上涨明显已无动力. At present, apart from additional subjects, there is no clear up momentum.

[例句] 枰台滚筒和无动力滚筒输送机. Scale table roller and no power roller transportation machine.

profitless，resultless，[法] bootless，unavailing，ineffectual ；

[例句] 鉴于这些事实, 继续下去似乎是无益的. In view of the facts, It'seems useless to continue.

[例句] 他们正在做无益的事. They are beating the air.

have no intention ，not be inclined to，inadvertently，unwittingly，accidentally ；

reluster，lackluster ；

[例句] 这种颜料有无光泽? Will this paint give a gloss or a matt finish?

[例句] 他灰白的头发又干又无光泽. His hair is dry, dull and grey.

barathrum，abime，a bottomless pit (that can never be filled)，insatible desires，abyss；

[例句] 他吃起东西来肚子像个无底洞。 He's a bottomless pit as far as food is concerned.

[例句] 战争把许多青年男子吞进了它的无底洞. The war swallowed up many young men into its maw.

atheism，antitheism ；

[例句] 他信奉无神论就像信仰一种新的宗教。 He believes in atheism as though it were a new religion.

[例句] 中国公民有信仰宗教的自由和不信仰宗教、宣传无神论的自由. Chinese citizens enjoy the freedom to believe in religion and the freedom not to believe in it and to propagate atheism.

incapability，incapacitation，[医] impotence，impotency，incompetence ；

[例句] 我不能接受那些低效率和无能力的人,即便我喜欢找个人. I can't accept inefficiency and incompetence even if I like the person.

[例句] 她被宣判为无能力者; 法官宣判被告是清白的. She was declared incompetent; judge held that the defendant was innocent.

innocent，not guilty，[法] clear，crimeless，guiltless ；

[例句] 他们宣布了无罪的判决。 They returned a verdict of not guilty.

[例句] 她的朋友断言她是无罪的. Her friends asserted that she was innocent.

breathed，mute，whist，noiseless，silent ；

[例句] 嘉宝拍过24部电影，先是无声的，后是有声的。 Garbo made two dozen films, first silent pictures then talkies.

[例句] 但是,这些大自然的无声的信息,具有双重直接的含意. But two distinct translations attached to these dumb expressions.

colorless，neutral，[医] achromatic，achromatistous，achromatous ；

[例句] 像水一样无色的液体 a colourless liquid like water

[例句] 将无色的小片状物过滤出来,用冷的甲醇洗涤. The colorless platelets were filtered washed with cold methanol.

invalid，null，[计] dimmed，feeble，impotent ；

[例句] 护照过期是无效的. A passport that is out of date is invalid.

[例句] 今天宇航员将会做最后一次尝试，力图把一颗通信卫星从无效的轨道上抢救下来。 Astronauts will make a final attempt today to rescue a communications satellite from its useless orbit.

unfounded，fantastic，absurd，fabulosity ；

[例句] 他认为,这一类的信仰有许多都是无稽的迷信. He regards many beliefs of that sort as idle superstitions.

[例句] 这真是荒唐无稽, 但也正符合你的性格. It's just irrational , but suits yourselt.

faint，weak，[医] adynamic，anergic，incapable ；

[例句] 我们将看到经济有所复苏，但这种复苏将是非常无力的。 We will see some economic recovery, but it will be very anaemic.

[例句] 我好像无法摆脱这种无力的感觉。 I can't seem to throw off this feeling of inertia.

bored，boring，dull，unimaginative，arid ；

[例句] 在东柏林就餐曾经是一件危险而且沉闷无趣的事情。 Eating in East Berlin used to be a hazardous and joyless experience.

[例句] 道格拉斯呆板无趣的名声并不副实。 Douglas has an undeserved reputation for being dull and dry.

countless，incalculable，unnumbered，numberless，sumless ；

[例句] 无数的是非颠倒使过去的岁月伤痕累累。 The past has been scarred by countless perversions of justice.

[例句] 无数的难民饱受生活颠沛流离之苦。 Millions of refugees have suffered a total dislocation of their lives.