The story
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*trísinflu.
- Proto-Indo-European*d(w)is-
- Proto-Italic*dis-
- Latindis-
- Old Frenchdes-
- Latindis-
- Middle Englishdis-
- Englishdis-
- Proto-Indo-European*steh₂-
- Proto-Indo-European*sth₂éh₁yeti
- Proto-Italic*staējō
- Proto-Italic*staēō
- Proto-Italic*staðlis?
- Latinstabilis
- Latinstabilīre
- Old Frenchestablir
- Old Frenchestablissement
- Middle Englishstablishment
- Englishestablishment
- Englishdis-
- Englishestablish
- English todaydisestablishment
By surface analysis, dis- + establishment or dis- + establish + -ment.
Etymology from Wiktionary, CC BY-SA 4.0.