| afraid | (adjective) filled with fear or apprehension | - |
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| (adjective) filled with regret or concern; used often to soften an unpleasant statement | - |
| (adjective) having feelings of aversion or unwillingness | - |
| (adjective) feeling worry or concern or insecurity | - |
| afresh | (adverb) again but in a new or different way | Synonyms: anew |
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| afropavo | (noun) both sexes are brightly colored | Synonyms: Afropavo congensis, Congo peafowl |
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| permafrost | (noun) ground that is permanently frozen | - |
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| safranin | (noun) any of a class of chiefly red organic dyes | Synonyms: saffranine, safranine |
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| safranine | (noun) any of a class of chiefly red organic dyes | Synonyms: saffranine, safranin |
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| sassafras | (noun) dried root bark of the sassafras tree | - |
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| (noun) yellowwood tree with brittle wood and aromatic leaves and bark; source of sassafras oil; widely distributed in eastern North America | Synonyms: Sassafras albidum, sassafras tree |
| seafront | (noun) the waterfront of a seaside town | - |
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| unafraid | (adjective) oblivious of dangers or perils or calmly resolute in facing them | Synonyms: fearless |
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| (adjective) free from fear or doubt; easy in mind | Synonyms: secure, untroubled |