Formal:
* स्वीकृति (sveekruti): This is the most literal translation and means "acceptance" or "recognition."
* मान्यता (manyaata): This means "acceptance" or "acknowledgment" and is more formal than "sveekruti."
Informal:
* स्वीकार (sveekar): This means "to accept" or "to acknowledge" and is more informal than "sveekruti" or "manyaata."
* मानना (maanna): This means "to believe" or "to accept" and is the most informal option.
Specific terms:
* प्रमाण पत्र (pramaan patra): This means "certificate" and is used for formal acknowledgments of achievements or qualifications.
* पत्र (patra): This means "letter" and can be used for informal acknowledgments of receipt.
The best choice will depend on the specific situation.