Formal:
* شُڪرِ اَللّهِ (Shukr-e-Allah): This is the most formal way to say thank you, literally meaning "Thank God".
* شُڪرِيا (Shukriya): This is a more general formal way to express gratitude.
Informal:
* اَچّو (Acho): This is the most common and casual way to say "thank you".
* اَچّو بَھت (Acho bahut): This means "Thank you very much".
* مُبَارَك (Mubarak): This is used to express gratitude for a gift or blessing.
Other options:
* تُسّي ڪَرِيو (Tusi kario): This means "You did well" and is a way to express gratitude for someone's help.
* اَچّو ڪَرِيو (Acho kario): This means "Thank you for doing this" and is more specific to an action.
The best way to express gratitude in Sindhi depends on your relationship with the person you are thanking and the situation.