Where does “irreverence” come from?

irreverence (Old French) comes from Latin irreverentia, from Latin irreverens, from Latin reverens, from Latin revereor, from Latin rĕ-, from Latin prōdūcō, from Latin prō-, from Proto-Italic *pro- — passed , crossed.

Ancestry of “irreverence”, step by step

Step	Language	Word	Meaning
1	Latin	irreverentia	irreverence, disrespect; nominative neuter plural...
2	Latin	irreverens	disrespectful, irreverent
3	Latin	reverens	respecting; respectful, reverent; reverent
4	Latin	revereor	I stand in awe , regard, respect, honor,...
5	Latin	rĕ-	—
6	Latin	prōdūcō	—
7	Latin	prō-	—
8	Proto-Italic	*pro-	—
9	Proto-Indo-European	pro-	toward, forward
10	Proto-Indo-European	por-	to give birth; forward, through; going, passage
11	Proto-Indo-European	per-	before, in front; first; to go through
12	Proto-Indo-European	pr̥tós	passed , crossed

Words derived from “irreverence”

irreverence

Every word from Proto-Indo-European pr̥tós →