• testin,
• tesin,
• tesen,
• fessin,
• gessin,
• yessin,
• 6essin,
• 5essin,
• twssin,
• tsssin,
• tdssin,
• trssin,
• t4ssin,
• t3ssin,
• tesson,
• tession,
• tassin,
• tessyn,
• Tessine,
• Tessen

• Tegan,
• Tecson,
• tassin,
• texan.

The adjective form of the word "Tessin" is "Ticinese". It refers to something or someone related to the canton of Ticino in Switzerland, where the primary language spoken is Italian.

The plural form of the word "tessin" is "tessins".

The singular form of the word "tessin" is "tessin". The word does not change in its singular form.