Wiktionary:Babel
mr या व्यक्तीची मातृभाषा मराठी आहे.
hi इस सदस्य की मातृभाषा हिन्दी है।
en-4 This user speaks English at a near-native level.
sa-1 अयं प्रयोक्ता सरलेन संस्कृतेन योगदानानि कर्तुं शक्नोति।
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If you are confused as to why I have two mother tongues, I do not. I am Native speakers of Marathi, particularly those who live in Mumbai have diaglossia in both the languages and exceedingly, in English as well.