Relating to or caused by excessive drinking; characterized by drunkenness or overindulgence.
From Latin crapulosus, derived from crapula (drunkenness) with the adjectival suffix -ous. This variant competes with 'crapulent' for the same meaning, representing different Latin morphological traditions entering English.
Medieval monks who copied Latin texts had to write about drunkenness a lot—hence why we have three slightly different adjective forms. It's a linguistic fossil showing how seriously the Church monitored excess.
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