Relating to an abbot, abbess, or abbey; similar in meaning to 'abbatial' but with the additional '-al' suffix creating an alternative form.
From 'abbat-' (the stem of abbot-related words) plus the double adjectival suffix '-ic' and '-al.' This form is archaic or dialectical, representing how word-formation rules in English could create multiple valid variants for the same concept.
English used to be much more generous with allowing multiple adjectival forms of the same word—'abbatical,' 'abbatial,' 'abbatic'—but modern English has ruthlessly pruned these down, keeping only the most useful forms and discarding the rest.
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