Green’s Dictionary of Slang

nimptopsical adj.

(orig. US) drunk.

[US]B. Franklin ‘Drinkers Dictionary’ in Pennsylvania Gazette 6 Jan. in AS XII:2 90: They come to be well understood to signify plainly that A MAN IS DRUNK. [...] Nimptopsical.
[US]F. Foster in Collier’s Wkly 17 Jan. 6/3: Since colonial days, approximately 400 terms to describe being drunk have been used in this country. Among the many no longer heard are bungey, nimptopsical, cherry-merry and ‘as stiff as a ringbolt’.
[US]D. Cazentre (ed.) N.Y. Breweries (2 edn) [ebook] Hitchcock took the word Nimptopsical from Benjamin Franklin, who used to term to refer to someone who drank too much.