空口無憑 (hung1 hau2 mou4 pang4) — mere words without a factual basis; a mere verbal statement is no guarantee; a verbal statement without any proof in Cantonese
hungˉ¹空hauˊ²口mouˎ₄無pangˎ₄憑简 空口无凭
Mandarin Pinyin: kong1 kou3 wu2 ping2
Meaning of 空口無憑
nounmere words without a factual basis; a mere verbal statement is no guarantee; a verbal statement without any proof