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   English
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noun | adverb | to phrases
underground [ˈʌndəɡraʊnd] n
agric. subteran; subsolier; freatic
 English thesaurus
underground ['ʌndə'graund] abbr.
abbr. ug
underground: 89 phrases in 7 subjects
Agriculture4
Construction65
Earth sciences1
Economy8
Engineering1
Environment9
Mining1