UNKNOWN Meaning of UNKNOWN in English unknown BrE AmE ˌʌn ˈnəʊn ◂ AmE \ -ˈnoʊn ◂▷ unknown|ness nəs nɪs ▷ unknown|s z▶ ˌ unknown ˈ quantity BrE AmE▶ ˌ Unknown ˈ Soldier BrE AmE Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012