Any noun or adjective stem is liable to be compounded with verbal forms or derivatives of the roots √कृ kṛ and भू bhū (and of अस् as also; but such cases are extremely rare), in the manner of a verbal prefix. If the final of the stem be an a- or i-vowel, it is changed to ई ī; if an u-vowel, it is changed to ऊ ū.

a. Examples are: stambhībhavati becomes a post; ekacittībhūya becoming of one mind; upahārīkaroṣi thou makest an offering; , nakhaprahārajarjarīkṛta torn to pieces with blows of the claws; çithilībhavanti become loose; kuṇḍalīkṛta ring-shaped; surabhīkṛta made fragrant; ādhīkaraṇa pawning; ṛjūkṛtya straightening;hetūkaraṇa taking as cause. As in the case of the denominatives (1059 c), the combinations with a-stems are the immense majority, and occur abundantly (hardly less than a thousand are quotable) in the later language, but for the most part only once or twice each; those made with i- and u-stems are a very small number. In a few instances, stems in an and as, with those finals changed to ī, are met with: e. g. ātmī-kṛ, yuvī-bhū; unmanī-kṛ, amanī-bhū; final ya after a consonant is contracted to ī: e. g. kāṅsī-kṛ; and anomalous cases likekāṁdiçī-bhū occur. Final ṛ is said to become rī, but no examples are quotable. The combinations with kṛ are about twice as frequent as those with bhū, and examples with as do not appear to have been brought to light.

b. Similar combinations are occasionally made with elements of questionable or altogether obscure character: e. g. urarī-kṛ, urī-kṛ.

c. Examples are not altogether wanting in the later language of ā as final of the compounded noun-stem (cf. 1091): thus, duḥkhā-kṛ, niṣkulā-kṛ, çambā-kṛ, and one or two others.