Where does “pro” come from?

Pro comes from Middle English pro, from Latin pro meaning "before" or "in front of," from Proto-Indo-European pro-, ultimately from the root per- meaning "forward" or "through."

pro (English): An advantage of something, especially when...

Definitions

  1. An advantage of something, especially when...

Ancestry of “pro”, step by step

pro traces back through 3 separate lines of ancestry.

via English professional

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

via Spanish pro

StepLanguageWordMeaning
1Spanishpropro, in favor of, for; pro
2Latinprōfor
3Latinratusconsidered, having been considered; established,...
4Latinrēōrto reckon, calculate
5Proto-Italicrēōrto reckon, to calculate; to think, to deem, to...
6Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
7Proto-Indo-Europeanh₂er-to fit, to fix, to put together

via Middle English pro

StepLanguageWordMeaning
1Middle Englishproadvantage, benefit, upside

Words derived from “pro

Every word from Ancient Greek χάλιξ