Where does “undisciplinary” come from?

undisciplinary (English) comes from English disciplinary, from Medieval Latin disciplinarius, from Latin disciplina, from Latin discipulus, from Latin -ina, from Latin -īnus, from Proto-Italic -īnos, from Proto-Indo-European -iHnos — adjectival suffix.

undisciplinary (English): Not enforcing discipline

Definitions

  1. Not enforcing discipline

Ancestry of “undisciplinary”, step by step

undisciplinary traces back through two separate lines of ancestry.

via English disciplinary

StepLanguageWordMeaning
1EnglishdisciplinaryHaving to do with discipline, or with the...
2Medieval Latindisciplinarius
3Latindisciplinateaching, instruction, education; training;...
4Latindiscipulusstudent, pupil, disciple, schoolboy; cadet
5Latin-inanominative feminine singular of -īnus; nominative...
6Latin-īnusof or pertaining to; -ine
7Proto-Italic-īnosof/belonging to
8Proto-Indo-European-iHnosCreates adjectives of materials
9Proto-Indo-European-no-adjectival suffix

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European -no-