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| complicated | 
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| a. [phức tạp] difficult to analyze or understand Legally this is a hugely complicated case, and it will take months for the judge to reach the verdict. | 
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| compliment | 
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| n. [khen] praise; commendation; say something to someone that expresses praise A compliment is a gift, not to be thrown away carelessly unless you want to hurt the giver. | 
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| concentrate | 
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| v. [tập trung] bring to or direct toward a common center; unite more closely; gather into one body I was now able to concentrate my attention on the group by the fire. | 
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| concept | 
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| n. [Khái niệm] something formed in mind; thought or notion The local chain concept is simple: identify your customer, cater to their tastes and once successful, expand within a neighborhood. | 
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| concern | 
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| n. [quan tâm] interest in any person or thing; regard; solicitude; anxiety There is no telling what might have happened, now, but luckily the concern passed out of Aunt Polly's face. | 
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| condition | 
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| n. [điều kiện] mode or state of being; fitness; existing circumstances The Organization Man survives as a modern classic because it captures a permanent part of our social condition. | 
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| conduct | 
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| v. [thực hiện] direct the course of; manage or control; lead or guide You cannot conduct business like this. | 
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| confident | 
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| a. [tự tin] assured; having or marked by assurance They don't sound confident about the future of the industry. | 
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| confidential | 
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| a. [mật] treated with confidence; trusted in; trustworthy; secret He has been on confidential missions to Berlin; all of us don't know his secret trip. | 
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| conflict | 
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| n. [xung đột] fight; struggle; incompatibility of dates or events According to the United Nations, malnutrition rates have now been cut by half since the start of the conflict. | 
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