Where does “legmegnyugtatóbb” come from?

legmegnyugtatóbb (Hungarian) comes from Hungarian megnyugtatóbb, from Hungarian megnyugtató, from Hungarian megnyugtat, from Hungarian nyugtat, from Hungarian nyugszik, from Hungarian -szik, from Hungarian -sz, from Proto-Slavic sь — whale, sea monster; abyss.

Ancestry of “legmegnyugtatóbb”, step by step

StepLanguageWordMeaning
1Hungarianmegnyugtatóbb
2Hungarianmegnyugtatópresent participle of megnyugtat; comforting,...
3Hungarianmegnyugtatto calm, to soothe, to ease, to reassure someone
4Hungariannyugtatto rest, repose; to calm, still, quiet, reassure,...
5Hungariannyugszikto rest; to set
6Hungarian-szikAppended to a noun, adjective, verb or other stem...
7Hungarian-szUsed to form the second-person singular present...
8Proto-Slavicthis
9Proto-Balto-Slavicśisthis here
10Proto-Indo-Europeanḱísthis
11Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
12Middle Englishkyt
13Russianкитwhale; genitive plural of ки́та
14Old Church Slavonicкитъwhale
15Ancient Greekκῆτοςwhale, sea monster; abyss
Every word from Ancient Greek κῆτοςEvery word from Old Church Slavonic китъEvery word from Russian кит