Where does “nonproficient” come from?

nonproficient (English) comes from English proficient, from Latin proficiens, from Latin proficio, from Latin faciō, from Latin -torium, from Latin -tōrius, from Latin -tor, from Proto-Italic -tōr.

nonproficient (English): Not proficient

Definitions

  1. Not proficient

Ancestry of “nonproficient”, step by step

nonproficient traces back through two separate lines of ancestry.

via English proficient

StepLanguageWordMeaning
1EnglishproficientGood at something; skilled; fluent; practiced,...
2Latinproficiensadvancing etc
3LatinproficioI advance, make progress, make headway; I...
4Latinfaciōto do
5Latin-toriumnominative neuter singular of -tōrius; accusative...
6Latin-tōriusory
7Latin-tor-er
8Proto-Italic-tōrForms agent nouns to verb stems
9Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
10Proto-Indo-European-tor-s

via English non

StepLanguageWordMeaning
1EnglishnonObsolete form of none
2Frenchnonno; not; a no, a negative response
3Old Frenchnonno; not; Alternative form of nom
4Latinnōnnot
5Old Latinnoenum
6Proto-Indo-Europeanóynosone; single
Every word from Proto-Indo-European -tor-sEvery word from Latin -toriumEvery word from Latin -tor