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| decoy | 
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| n. [بتک] lure or bait; means used to mislead or lead into danger The decoy did not fool the wild ducks. | 
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| default | 
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| n. [ڈیفالٹ] failure to act; an option that is selected automatically When the visiting team failed to show up for the big game, they lost the game by default. | 
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| defer | 
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| v. [ملتوی] delay till later; put off; hold back to a later time I would again defer to responsible judgment when we're dealing with this kind of thing. | 
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| defiance | 
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| n. [نافرمانی] refusal to yield; readiness to contend or resist Now I feel by imperceptible signs, which I cannot yet interpret but will later, that his defiance is about to thaw. | 
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| definitive | 
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| a. [آخری] final; complete; precisely defined or explicit And finally, the utility of the skeleton would be most likely to aid in definitive identification. | 
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| deflect | 
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| v. [موڑنا] turn aside; draw someone's attention away from something No one believed that his life was saved because his cigarette case could deflect the bullet. | 
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| defuse | 
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| v. [کو کم] remove the fuse of the bomb; reduce or eliminate the threat Police negotiators are trained to defuse dangerous situations by avoiding confrontational language and behavior. | 
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| degenerate | 
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| v. [degenerate] become worse; decline; fall Not appear to disgrace his family, degenerate from the popular qualities, or lose the influence. | 
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| delectable | 
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| a. [سہاونا] delightful; delicious; extremely pleasing to the sense of taste We thanked our host for a most delectable meal. | 
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| delete | 
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| v. [خارج] erase; strike out; remove or make invisible Less is more: if you delete this paragraph, your whole essay will have greater appeal. | 
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| deliberate | 
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| v. [بحث] consider; think about carefully; weigh Offered the new job, she asked for time to deliberate before she told them her decision. | 
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| delusion | 
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| n. [برم] false belief; mistaken or unfounded opinion Don suffers from grandeur delusion: he thinks he's a world-famous author when he's published just one paperback book. | 
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| demeanor | 
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| n. [برتاؤ] conduct; management; way in which a person behaves It'll be interesting to see what her demeanor is and what kind of witness she is. | 
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| demented | 
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| a. [پاگل] insane; mad; of unsound mind; mentally ill What kind of demented image of him have you painted in your head? In fact, he is a real gentleman. | 
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| demise | 
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| n. [انتقال پر] end of existence or activity; termination Upon the demise of the dictator, a bitter dispute about succession to power developed. | 
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| deploy | 
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| v. [تعیناتی] position troops in readiness for combat, as along a front or line; put into use or action The general ordered the battalion to deploy to meet the enemy offensive. |