Where does “odjednom” come from?

odjednom (Serbo-Croatian) comes from Serbo-Croatian od, from Proto-Slavic otъ, from Proto-Indo-European éti, from Proto-Indo-European h₁é, from Proto-Indo-European ǵʰe — Postpositional intensifying particle: indeed, at any rate, in fact.

odjednom (Serbo-Croatian): suddenly, unexpectedly, at once

Definitions

  1. suddenly, unexpectedly, at once

Ancestry of “odjednom”, step by step

odjednom traces back through two separate lines of ancestry.

via Serbo-Croatian od

StepLanguageWordMeaning
1Serbo-Croatianodfrom, since; of; than
2Proto-Slavicotъfrom, away from; originating from, starting from...
3Proto-Indo-Europeanétibeyond; over
4Proto-Indo-Europeanh₁éand, then
5Proto-Indo-EuropeanǵʰePostpositional intensifying particle: indeed, at any rate, in fact

via Serbo-Croatian jèdan

StepLanguageWordMeaning
1Serbo-Croatianjèdanone (1)
2Proto-Slavic(j)edinъ
3Proto-Indo-Europeanóynosone; single
Every word from Proto-Indo-European ǵʰeEvery word from Proto-Indo-European h₁éEvery word from Proto-Indo-European éti