disc▪ [v1] : Lokotsch1927 #1826 assumes a prob. Ind origin but does not give further details. – Rolland2014a thinks the etymon is Grk sundókos ‘recipient, container’, from prefix sun‑ ‘together’ + déχ-omai ‘to receive, take, accept’, from IE *dek‑ ‘dto.’ (cf. also ↗funduq < Grk pan-doχeîon); reimported into Grk as sánduks ‘case, suitcase’ (classified by Beekes2010 simply as »Pre-Greek«). Instead of sun‑ + déχ-omai, Nişanyan_06Sept2019 posits Grk συνθήκη sunthḗkē, from sun‑ + tíθ-emi, θe- ‘to put’.
▪ [v2] : …