Of or relating to anapaests; written in or composed using the anapaest metrical foot.
From 'anapaest' + '-ical' (relating to, characterized by). An archaic or alternative form of 'anapaestic' using the '-ical' suffix instead of '-ic'.
This is essentially a longer, fancier version of 'anapaestic'—the '-ical' ending was more common in older English, which is why you'll find it in Victorian poetry books but rarely in modern writing!
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