Where does “tnejn” come from?

tnejn (Maltese) comes from Arabic اثنان, from Arabic اِثْنَان — two.

tnejn (Maltese): two

Definitions

Step	Language	Word	Meaning
1	Arabic	اثنان	two
2	Arabic	اِثْنَان	two

tnejn — Etymology, Origin & Word History | Etymology Explorer