Answers

2014-12-17T08:56:46+05:30
Underneath is a perfect synonym for under. Because it is under which is originated from underneath as an abbreviation. Both can be as preposition, adjective and adverb .
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2014-12-17T16:57:42+05:30
there is no difference between the words "under" and "underneath" because both are prepositions and they posses the same meaning.
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