Where does “proslavery” come from?

Proslavery comes from English slave plus the English suffix -ery, from Old French esclave, from Medieval Latin sclavus, ultimately from Proto-Indo-European bʰuH-, meaning to grow or swell.

proslavery (English): Supporting slavery

Definitions

  1. Supporting slavery

Ancestry of “proslavery”, step by step

proslavery traces back through two separate lines of ancestry.

via English slavery

StepLanguageWordMeaning
1EnglishslaveryAn institution or social practice of owning human...
2EnglishslaverTo drool saliva from the mouth; to slobber; To...
3EnglishslaveA person who is held in servitude as the property...
4Middle Englishsclaveslave individual held in slavery
5Frenchesclaveslave
6Medieval LatinsclavusSlav, slave; slave
7Ancient GreekΣκλάβοςSlav
8Ancient GreekΣκλαβηνόςSlavic
9Proto-SlavicslověninъSlav
10Proto-Slavicslovoword
11Proto-Balto-Slavicślawas
12Proto-Indo-Europeanḱléwosfame
13Proto-Indo-Europeanḱlew-to hear
14Proto-Indo-Europeanḱel-to cover; to incline

via English pro

StepLanguageWordMeaning
1EnglishproAn advantage of something, especially when...
2EnglishprofessionalA person who belongs to a profession; A person...
3EnglishprofessionA declaration of belief, faith or one's opinion,...
4Anglo-Normanprofessioun
5Old Frenchprofessionprofession; declaration
6Latinprofessiōdeclaration, avowal, profession (act of professing)
7Latin-tiōtion, -ation, -ing
8Latindissertātiō(spoken) dissertation, discourse, disquisition
9Latindissertusarranged, disposed; explained
10Latindissereresecond-person singular future passive indicative...
11Latindis-asunder, apart, in two; reversal, removal;...
12Latincalceusshoe
13Latincalxlimestone; chalk; the finish line
14Ancient Greekχάλιξsmall stone, pebble; gravel, rubble
Every word from Proto-Indo-European ḱel-Every word from Proto-Indo-European ḱlew-Every word from Proto-Indo-European ḱléwos