From Proto-Indo-Aryan *sr̥gás, from Proto-Indo-Iranian *sr̥gás, possibly from Proto-Indo-European *sl̥ǵ-ós, from *selǵ- (“to let go, send”), possibly related to सृग (sṛgá) and English sulk. The final ka in sṛká can be obtained if one hypothesizes an athematic PIE noun *sl̥ǵ that would yield सृक् (sṛk) due to devoicing of final consonants, followed by its reanalysis as a thematic noun to give sṛká. However, given that Proto-Indo-European *ǵ yields Sanskrit j instead of g, an innovation can be considered, or a borrowing from some centum branch of Indo-European.
Monier-Williams suggests a derivation from the Sanskrit roots which in turn derive from PIE *selǵ: सृ (sṛ, “to run, flow, speed, glide”) or सृज् (sṛj, “to throw, cast, eject”), and also proposes a derivation from an obsolete root सृक् (sṛk, “to be pointed”).
सृक • (sṛká) stem, m
| Masculine a-stem declension of सृक (sṛká) | |||
|---|---|---|---|
| Singular | Dual | Plural | |
| Nominative | सृकः sṛkáḥ |
सृकौ / सृका¹ sṛkaú / sṛkā́¹ |
सृकाः / सृकासः¹ sṛkā́ḥ / sṛkā́saḥ¹ |
| Vocative | सृक sṛ́ka |
सृकौ / सृका¹ sṛ́kau / sṛ́kā¹ |
सृकाः / सृकासः¹ sṛ́kāḥ / sṛ́kāsaḥ¹ |
| Accusative | सृकम् sṛkám |
सृकौ / सृका¹ sṛkaú / sṛkā́¹ |
सृकान् sṛkā́n |
| Instrumental | सृकेण sṛkéṇa |
सृकाभ्याम् sṛkā́bhyām |
सृकैः / सृकेभिः¹ sṛkaíḥ / sṛkébhiḥ¹ |
| Dative | सृकाय sṛkā́ya |
सृकाभ्याम् sṛkā́bhyām |
सृकेभ्यः sṛkébhyaḥ |
| Ablative | सृकात् sṛkā́t |
सृकाभ्याम् sṛkā́bhyām |
सृकेभ्यः sṛkébhyaḥ |
| Genitive | सृकस्य sṛkásya |
सृकयोः sṛkáyoḥ |
सृकाणाम् sṛkā́ṇām |
| Locative | सृके sṛké |
सृकयोः sṛkáyoḥ |
सृकेषु sṛkéṣu |
| Notes |
| ||
Monier Williams (1899) “सृक”, in A Sanskrit–English Dictionary, , new edition, Oxford: At the Clarendon Press, →OCLC, page 1245.