Where does “gnostical” come from?

gnostical (English) comes from English AL, from Dutch al, from Middle Dutch al, from Old Dutch āl, from Proto-West Germanic all, from Proto-Germanic allaz, from Proto-Indo-European h₂él- — to grow, nourish.

Ancestry of “gnostical”, step by step

gnostical traces back through two separate lines of ancestry.

via English AL

StepLanguageWordMeaning
1EnglishALInitialism of assembly language; Initialism of...
2Dutchalall, all of; already; yet
3Middle Dutchalall, all of; completely; even though, no matter...
4Old Dutchāl
5Proto-West Germanicallall
6Proto-Germanicallazall
7Proto-Indo-Europeanh₂él-to grow, nourish

via English Gnostic

StepLanguageWordMeaning
1EnglishGnosticOf, or relating to, intellectual or spiritual...
2Ancient Greekγνωστῐκόςof or for knowing, cognitive
3Ancient GreekγιγνώσκωI am aware of; I perceive, observe, know, learn;...
4Proto-Indo-Europeanǵn̥h₃sḱétito recognise
5Proto-Indo-Europeanǵneh₃-to know
Every word from Proto-Indo-European h₂él-Every word from Proto-Germanic allazEvery word from Proto-West Germanic all