1
Indonesian
A standardized form of Malay and the national language of Indonesia — a deliberate lingua franca for the world's fourth-most-populous country, with about 200 million speakers.
You're looking for 10-letter languages containing O — here are 4 matches, each linked to a full profile.
List of 10-letter Languages that contain O
2
Macedonian
A South Slavic language closely related to Bulgarian — official in North Macedonia, written in a distinctive Cyrillic alphabet.
3
Old English
The West Germanic language spoken in early medieval England — the language of *Beowulf*, unrecognisable to modern English speakers without study.
4
Portuguese
A Romance language born in the Iberian northwest and spread by maritime empire — today the official language of Portugal, Brazil, and several African and Asian states.
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