Tāʾ Marbūṭa in Iḍāfa

The letter ة, tāʾ marbūṭa, usually sounds like -a(h) at the end of a word in pause: غرفة ghurfa(h), “a room.” When that same word is the first term of an iḍāfa, it is no longer at the end of its phrase. Its hidden t becomes audible before the genitive term: غرفة الفندق ghurfatu l-funduq, “the hotel room.” The spelling remains ة; only its grammatical environment changes the pronunciation.

English speakers often miss this because English possession does not change the final sound of “room,” “company,” or “university.” In Arabic, the audible t is one of the clearest spoken signals that a construct head is connected to what follows.

The tāʾ marbūṭa pronunciation page develops the broader pause-versus-connection contrast; here the focus is its grammatical work inside iḍāfa.

The two-word build-up

Compare the noun by itself with the same noun heading a construct chain:

غرفةُ is the nominative predicate, so its connected ending is -atu: the consonant t plus nominative u. The final possessor الفندق is genitive inside the chain, though its short case ending is not heard at the end-of-sentence pause in this example.

The head is accusative after حجزنا and genitive after في. The written shape غرفة stays constant in unvocalized text, but the intended formal readings are ghurfata and ghurfati. This page gives those endings explicitly because case is the point being demonstrated. In ordinary formal speech, speakers vary in how consistently they realize case endings; the construct t, however, remains essential whenever another word follows.

The t belongs to the noun, not to the next word

In سيارة المدير “the director’s car,” parse سيارة as the head and المدير as the genitive term. The t comes from the head’s tāʾ marbūṭa; it is not an article sound and not the first sound of المدير.

The first sentence has nominative سيارةُ; the second has accusative سيارةَ. In both, the spoken sequence contains sayyārat-. If the sentence ended with the unconstructed noun—هذه سيارة “this is a car”—a natural pause would instead give sayyāra(h).

The same alternation appears before a possessive suffix, because a suffix also completes a construct relation:

Here -tuhā contains construct t, nominative u, and the suffix -hā “her.” The orthographic ة changes to written ت before an attached suffix: سيارتها. This spelling change differs from an overt following noun, where ة remains visible: سيارة المدير.

Definiteness still comes from the final term

Tāʾ marbūṭa tells you about connection and pronunciation, not definiteness by itself. An iḍāfa is definite only if its final term is definite.

In both examples غرفةُ has no الـ and no tanwīn because it is a construct head. The first chain is indefinite because فندقٍ is indefinite. The second is definite because الفندقِ is definite. Both English translations can sound possessive or relational, but Arabic definiteness follows syntax, not the English choice of “in” or “of.”

Longer chains keep every connection audible

A long iḍāfa is a series in which every nonfinal noun is construct and the last term determines definiteness. Tāʾ marbūṭa is pronounced t wherever it occurs on a nonfinal head.

Parse the chain as مكتبةَ “library of” + كليةِ “college of” + الهندسةِ “engineering.” The first two nouns end in ة, and both are nonfinal heads. Their connected readings are therefore maktabata and kulliyyati. The cases differ: مكتبةَ is the accusative object of “opened,” while كليةِ is genitive because it follows a construct head.

This chain contains three words ending in tāʾ marbūṭa. لجنةُ and إدارةِ are connected heads and expose t. Final الشركةِ is followed by more sentence material here, so its case and t are also audible in careful connected reading; at phrase-final pause it would end in -a(h).

Adjective attachment can change the case ending

An adjective cannot be inserted between a construct head and its genitive term. It follows the complete chain and agrees with the noun it describes. Gender often makes the attachment obvious:

Feminine accusative الجديدةَ describes the head مكتبةَ in the first sentence. Masculine genitive الجديدِ describes the nearer possessor المعهدِ in the second. Both adjectives stand after the chain; agreement and case determine their scope.

Common Mistakes

Silencing tāʾ marbūṭa inside the chain

Putting the possessor first

Adding the article to the construct head

Giving the construct head tanwīn

Letting the nearest noun control every adjective

Key Takeaways

• Pause gives ة the usual reading -a(h), but a construct head exposes -t- before its genitive term.
• The connected endings are -atu, -ata, and -ati for nominative, accusative, and genitive.
• A construct head has neither الـ nor tanwīn; the final term determines whether the chain is definite.
• In long chains, every nonfinal tāʾ marbūṭa head is connected, and an adjective’s agreement and case reveal its attachment.