ة (tāʔ marbūṭa) is a variant of the letter ت (tāʔ) used at the end of words. It is formed from the letter ه (hāʔ) with the addition of the two overdots of ت (tāʔ).

Suffix used to form feminine adjectives from masculine adjectives. / Suffix used to form feminine nouns from masculine nouns referring to people. / Suffix used to form singulative nouns (referring to one item) from collective nouns (referring to a collection of items): for instance, بَقَرَة (baqara, “cow”) from بَقَر (baqar, “cattle”) or شَجَرَة (šajara, “tree”) from شَجَر (šajar, “trees”). / Suffix used to form instance nouns (nomina vicis, referring to a single instance of an action) from verbal nouns: for instance, اِبْتِسَامَة (ibtisāma, “a smile”) from اِبْتِسَام (ibtisām, “smiling”) or اِنْتِفَاضَة (intifāḍa, “an uprising, an intifada”) from اِنْتِفَاض (intifāḍ, “rising up, shaking off”). / Suffix used to form abstract nouns from nisba adjectives in ـِيّ (-iyy): for instance, اِشْتِرَاكِيَّة (ištirākiyya, “socialism”) from اِشْتِرَاكِيّ (ištirākiyy, “socialist”). Alternatively, the combination of the two suffixes can be viewed as a single suffix ـِيَّة (-iyya).