endless

permanent, eternal, perpetual, everlasting, endless

这些形容词均有“持久的、永久的”之意。
permanent: 指总是处于相同的情况和地位，可长期持续下去，永久不变。
eternal: 语体较庄重，侧重指永远存在，无始无终。
perpetual: 语气最强，指保持永久不变，没有中断的行为，永无止境地持续下去，有时用于贬义，指令人厌烦之事。
everlasting: 语气较庄重，有时可与eternal换用，侧重持续不尽，或指开始后一直进行下去。
endless: 系日常用词，指无尽无休。

形容词 endless:

1. tiresomely long; seemingly without end
   同义词：eternal, interminable
2. infinitely great in number
3. having no known beginning and presumably no end
   同义词：dateless, sempiternal
4. having the ends united so as to form a continuous whole
5. occurring so frequently as to seem ceaseless or uninterrupted
   同义词：incessant, perpetual

1. I began to sicken of the endless violence shown on television.
   我逐渐对电视上无尽无休的暴力镜头感到厌恶。
2. The fascinations of the circus are endless.
   马戏表演非常吸引人。
3. Visitors to the exhibition came in an endless stream.
   参观展览会的人络绎不绝。
4. The endless lea will purify your thought.
   一望无际的草原会净化你的思想。
5. His endless talking hinders me from my study.
   他没完没了的谈话妨碍了我的学习。
6. British writer best known for his popular historical novels, especially The Last Days of Pompeii(1834), and for his seemingly endless convoluted sentences.
   布尔沃·利顿，爱德华·乔治·厄尔·利顿1803－1873英国作家，以其颇受欢迎的历史小说而闻名，尤其是庞贝城的最后一日(1834年), 以及他那看起来永无止境的错综复杂的句子
7. I am too busy to listen to her endless grievance.
   我太忙了，没空听她那没完没了的牢骚。
8. Her endless patience made her the best nurse in the hospital.
   无限的耐心使她成为这个医院最好的护士。

end.less

adj.（形容词）
Being or seeming to be without an end or a limit; boundless:
无尽的，无边的：无穷尽的或似乎无穷尽的；无止境的：
例句：
an endless universe; an endless conversation.
无边无际的宇宙；没完没了的谈话

Formed with the ends joined; continuous:
环形的，无端的：头尾相连的；连续不断的：
例句：
an endless chain.
环链

【引伸】
end.lessly
adv.（副词）
end.lessness
n.（名词）