Where does “decorum” come from?

decorum (Latin) comes from Latin decorus, from Latin decor, from Latin -or, from Proto-Italic -ōs, from Proto-Indo-European -ōs, from Proto-Indo-European -oss, from Proto-Indo-European -os — Creates action nouns or result nouns from verbs;...

decorum (Latin): seemliness, propriety; nominative neuter singular...

Definitions

  1. seemliness, propriety; nominative neuter singular...

Ancestry of “decorum”, step by step

StepLanguageWordMeaning
1Latindecorusbecoming, fitting, proper, suitable; decorated,...
2Latindecorelegance, grace; beauty, charm
3Latin-orused to form a third-declension masculine...
4Proto-Italic-ōsCreates masculine action nouns or result nouns...
5Proto-Indo-European-ōsCreates masculine and feminine action nouns or...
6Proto-Indo-European-oss
7Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

Words derived from “decorum

Every word from Proto-Indo-European -osEvery word from Latin -orEvery word from Latin decor
decorum — Etymology, Origin & Word History | Etymology Explorer