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| sac | 
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| n. Syn. pouch pouch or pouch-like structure in a plant or an animal, sometimes filled with fluid | 
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| salient | 
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| a. Syn. prominent prominent or protruding; projecting outwardly; moving by leaps or springs | 
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| salinity | 
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| n.  relative proportion of salt in a solution; the taste experience when salt is taken into the mouth | 
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| salute | 
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| n. Syn. honor give a sign of good will; compliment by an act or ceremony, as a kiss, a bow; honor | 
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| salvage | 
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| v. Syn. rescue save from loss or destruction; rescue of a ship; save for further use | 
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| sample | 
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| n. Syn. specimen; example small part of something intended as representative of the whole | 
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| sanctuary | 
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| n. Syn. refuge; shelter; shrine place of refuge or asylum; shrine; holy place, such as a church, temple, or mosque | 
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| sanity | 
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| n.  condition or quality of being sane; soundness of health of body or mind, especially of the mind | 
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| sap | 
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| n. Syn. fluid watery fluid that circulates through a plant, carrying food and other substances to the various tissues; essential bodily fluid | 
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| sarcasm | 
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| n. Syn. wit; satire cutting, often ironic remark intended to wound; stinging rebuke; form of humor by mocking with irony | 
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| saturate | 
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| v. Syn. soak soak, fill, or load to capacity; cause to unite with the greatest possible amount of another substance |