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 4000 Duolingo (N O) - Spelling Practices
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a. độc hại harmful to living things; injurious to health


Spelling Word: noxious
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a. nhiều many; various; amounting to a large indefinite number


Spelling Word: numerous
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n. đối act of expressing earnest opposition or protest


Spelling Word: objection
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a. quên inattentive or unmindful; lacking all memory; forgetful


Spelling Word: oblivious
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n. khiêu dâm offensive to accepted standards of decency or modesty; repulsive; disgusting


Spelling Word: obscene
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a. ám ảnh having or showing excessive or compulsive concern; influenced or controlled by a powerful force


Spelling Word: obsessed
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a. đạt được available; capable of being obtained


Spelling Word: obtainable
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a. khứu giác relating to, or contributing to a sense of smell


Spelling Word: olfactory
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n. khởi phát beginning or early stages; offensive against an enemy


Spelling Word: onset
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n. lan plants usually having flowers of unusual shapes and beautiful colors


Spelling Word: orchid