Reconstruction:Proto-Slavic/eša

Etymology
Unclear.
 * Per Iljinsky (followed by ESSJa, Vasmer): probably from, an optative of the copula . Cognates include 🇨🇬, 🇨🇬, 🇨🇬.
 * Per Sławski: simplification of ; for semantics compare 🇨🇬 (compared to 🇨🇬, , ), for šč > š shift compare 🇨🇬 (dialectal) :  (dated), 🇨🇬 :  (dialectal), 🇨🇬 : , all from . He rejected Iljinsky's etymology as unlikely.
 * Berneker: From grammaticalization of the augment particle + demonstrative.

Adverb

 * : hopefully, if only, let, may, had better

Descendants

 * East Slavic:
 * South Slavic:
 * Old Church Slavonic:
 * Cyrillic:
 * Glagolitic:
 * Church Slavonic: ,
 * Church Slavonic: ,