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Practise English on your Android device.
Verb
Example: “You must substantiate the claim with reliable data.”
Synonyms: sustain, affirm, support
Antonyms: negate, contradict
Adjective
Example: “The claim was substantiated.”
Synonyms: verified
Antonyms: unproven
Noun
Example: “The theory explains the results.”
Synonyms: concept, model
Antonyms: fact
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