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WordNet-Online 
 
Adjective unbeknownst has 1 sense 
 
Adverbial unbeknownst has 1 sense 
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| unbedinct unbedinkt unbefitting unbeholden unbeholden predicate  unbeknowing unbeknowingly unbeknown unbeknownst unbelief unbelievable unbelievably unbelieveable unbeliever unbelieving unbelievingly unbelivable 
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