| Singular | Dual | Plural | |
| Nominative |
ऋजूकः
ṛjūkaḥ |
ऋजूकौ
ṛjūkau |
ऋजूकाः
ṛjūkāḥ |
| Vocative |
ऋजूक
ṛjūka |
ऋजूकौ
ṛjūkau |
ऋजूकाः
ṛjūkāḥ |
| Accusative |
ऋजूकम्
ṛjūkam |
ऋजूकौ
ṛjūkau |
ऋजूकान्
ṛjūkān |
| Instrumental |
ऋजूकेन
ṛjūkena |
ऋजूकाभ्याम्
ṛjūkābhyām |
ऋजूकैः
ṛjūkaiḥ |
| Dative |
ऋजूकाय
ṛjūkāya |
ऋजूकाभ्याम्
ṛjūkābhyām |
ऋजूकेभ्यः
ṛjūkebhyaḥ |
| Ablative |
ऋजूकात्
ṛjūkāt |
ऋजूकाभ्याम्
ṛjūkābhyām |
ऋजूकेभ्यः
ṛjūkebhyaḥ |
| Genitive |
ऋजूकस्य
ṛjūkasya |
ऋजूकयोः
ṛjūkayoḥ |
ऋजूकानाम्
ṛjūkānām |
| Locative |
ऋजूके
ṛjūke |
ऋजूकयोः
ṛjūkayoḥ |
ऋजूकेषु
ṛjūkeṣu |