Where does “deconfessionalisation” come from?

deconfessionalisation (English) comes from English deconfessionalise, from English confessionalise, from English confessional, from English confession, from Middle English confessioun, from Old French confession, from Latin confessio, from Latin cōnfiteor — resin, gum; to say, speak.

Ancestry of “deconfessionalisation”, step by step

StepLanguageWordMeaning
1Englishdeconfessionalise
2EnglishconfessionaliseAlternative spelling of confessionalize
3EnglishconfessionalIn the manner or style of a confession;...
4EnglishconfessionThe open admittance of having done something; A...
5Middle Englishconfessiounconfession
6Old Frenchconfessionconfession (the disclosure of one's sins to a clergyman for absolution)
7Latinconfessioa confession, acknowledgment; creed or avowal of...
8Latincōnfiteorto confess, admit
9Latincōn-Used in compounds to indicate a being or bringing together of several objects
10Latincumwith, along with; at; -fold
11Old LatincomAlternative form of cum
12Proto-Italickomwith, along, at
13Proto-Indo-Europeanḱómbeside, near, by, with
14Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
15Middle Englishkyt
16Germankittputty certain kinds of cement used for fixing e.g. window panes
17Old High Germankuti
18Proto-West Germanickwidugum, resin
19Proto-Germanickweduzresin
20Proto-Indo-Europeangʷet-resin, gum; to say, speak
Every word from Proto-Indo-European gʷet-