Question

unconscious 【UNCONSCIOUS】He was knocked unconscious when the car struck him. 他被车子撞得失去了知觉。【重点词汇】unconscious adj. 无知觉的

Accepted Answer

[ʌn'kɑːnʃəs] 
unconsciousnot conscious; lacking awareness and the capacity for sensory perception as if asleep or dead
When you're unconscious you're passed out or asleep. Anything going on in the body that we're not aware of can also be called unconscious.
Being unconscious can be very nice, especially when you're in the middle of a deep sleep. But if you're unconscious because you fainted or got hit in the head, that's not so good. Unconscious people aren't aware of what's going on, and they can't talk or do things — except maybe for sleepwalking and sleeptalking. There are also unconscious thoughts and desires: things going on in the mind that you don't know about.
All forms of 'unconscious' will appear on average once every 160 pages.consciousconsciouslyconsciousnessnonconsciousself-conscioussemiconscioussubconsciousunconsciousself-consciouslyself-consciousnesssemiconsciousnesssubconsciouslysubconsciousnessunconsciouslyunconsciousness
CHOOSE RIGHT WORDS: UNCONSCIONABLE-UNCONSCIOUS
			
  These two words look and sound similar. In fact, if you think too hard about them  together, you might find your tongue tripping over them. 
  
  The  older unconscionable, dating back to  the 1560s, is the absence of reason or right; having no idea between right and  wrong:

She said she finds WWE's simulated rape scenes "unconscionable.''
    
      It is unconscionable that the Obama Administration is gambling  with American lives.
    
      Attempting to fence them out of their home is unconscionable.

Relative  newcomer unconscious originated in  1712, meaning unaware. In the 1860s, it picked up the meaning to lose  consciousness, to not be awake:

Fidgeting and Doodling Could Be Unconscious Focus Tools
    
      Woman attacked and left unconscious under bridge in  Edinburgh
    
      Zsa Zsa Gabor is unconscious as she's been fitted with a feeding  tube in the hospital.

Both  words descend from the Old French conscience (inner knowledge), which in turn comes from the Latin conscientia, which means both inner knowledge and a knowledge of  right and wrong.
  How  can you tell these cousins apart? Unconscionable's  opposite would be the obsolete conscionable,and it sometimes seems right behavior  is also obsolete in our society—just look at our example sentences! If that's  not the word you're after, it must be unconscious.

Front	unconscious
Pron	[ʌn'kɑːnʃəs]
Back	【UNCONSCIOUS】 He was knocked unconscious when the car struck him. 他被车子撞得失去了知觉。【重点词汇】 unconscious adj. 无知觉的
Vocab	unconsciousnot conscious; lacking awareness and the capacity for sensory perception as if asleep or dead When you're unconscious you're passed out or asleep. Anything going on in the body that we're not aware of can also be called unconscious. Being unconscious can be very nice, especially when you're in the middle of a deep sleep. But if you're unconscious because you fainted or got hit in the head, that's not so good. Unconscious people aren't aware of what's going on, and they can't talk or do things — except maybe for sleepwalking and sleeptalking. There are also unconscious thoughts and desires: things going on in the mind that you don't know about. All forms of 'unconscious' will appear on average once every 160 pages. conscious consciously consciousness nonconscious self-conscious semiconscious subconscious unconscious self-consciously self-consciousness semiconsciousness subconsciously subconsciousness unconsciously unconsciousness CHOOSE RIGHT WORDS: UNCONSCIONABLE-UNCONSCIOUS These two words look and sound similar. In fact, if you think too hard about them together, you might find your tongue tripping over them. The older unconscionable, dating back to the 1560s, is the absence of reason or right; having no idea between right and wrong: She said she finds WWE's simulated rape scenes "unconscionable.'' It is unconscionable that the Obama Administration is gambling with American lives. Attempting to fence them out of their home is unconscionable. Relative newcomer unconscious originated in 1712, meaning unaware. In the 1860s, it picked up the meaning to lose consciousness, to not be awake: Fidgeting and Doodling Could Be Unconscious Focus Tools Woman attacked and left unconscious under bridge in Edinburgh Zsa Zsa Gabor is unconscious as she's been fitted with a feeding tube in the hospital. Both words descend from the Old French conscience (inner knowledge), which in turn comes from the Latin conscientia, which means both inner knowledge and a knowledge of right and wrong. How can you tell these cousins apart? Unconscionable's opposite would be the obsolete conscionable,and it sometimes seems right behavior is also obsolete in our society—just look at our example sentences! If that's not the word you're after, it must be unconscious.

Unconscious Aware Things Words Meaning Zsa Knowledge Obsolete