Sentence:  Urban Dictionary records at least 66 of the terms found by the present research, but as this dictionary liberally accepts words, definitions, and sample sentences based solely on the say-so of contributors, in the absence of corroboration from other sources the authenticity of some entries must remain <WSD>dubious</WSD>. 
Meaning of the word marked with <WSD> tags:  Arousing doubt; questionable; open to suspicion.