The Osing language (Osing: Basa Using; Indonesian: Bahasa Osing), locally known as the language of Banyuwangi, is the language of the Osing people of East Java, Indonesia.

Some Osing words have the infix /-y-/ 'ngumbyah', 'kidyang', which are pronounced /ngumbah/ and /kidang/ in standard Javanese, respectively.^[2]

Divergent Osing vocabulary includes:^[2]

• osing/sing 'not' (standard Javanese: ora)
• paran 'what' (standard Javanese: åpå Paran in standard Javanese mean existing)
• kadhung 'if" (standard Javanese:yèn,lèk,nèk, dhonge)
• kelendhi 'how' (standard Javanese:kepiyè,piyè)
• maning 'again' (standard Javanese:manèh,the Banyumasan dialect and some Gresik of Javanese also uses 'maning')
• isun 'I/me' (standard Javanese:aku, Kedu and Gresik sometimes also uses 'isun')
• rikå 'you' (standard Javanese:kowè,the Banyumasan dialect also uses "rikå")
• ring/nong 'in/at/on' (standard Javanese:ning,nang, Malang also uses 'nong' , the Balinese language and Old Javanese also uses "ring")
• masiyå/ambèknå 'even if'/'although' (standard Javanese:senadyan,senajan,najan, the Arekan dialect of Javanese also uses 'masiyå' / ambekna )