German nö [Wiktionary] is understood by 25% of world population, as:
/-/, /nəʊ/, /noʊ/, /numeɾo/, /no/, /ne/, /noh/, /nʊh/, /næ/, /nʊʰ/, /noʰ/
no (English) ✘, no (Italian) ✘, no (Catalan) ✘, no (Interlingua) ✘, nee (Dutch) ✘, nee (Afrikaans) ✘;
Now you can say nö to 1,778,000,000 people!
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