biệt tích

== Vietnamese == === Etymology === (This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) === Pronunciation === (Hà Nội) IPA(key): [ʔɓiət̚˧˨ʔ tïk̟̚˧˦] (Huế) IPA(key): [ʔɓiək̚˨˩ʔ tɨt̚˦˧˥] (Saigon) IPA(key): [ʔɓiək̚˨˩˨ tɨt̚˦˥] === Adjective === biệt tích without leaving a trace Synonyms: bặt tăm, biệt tăm, mất tăm