Of or relating to antarchism; antarchistic, with an added '-al' suffix for emphasis or stylistic variation.
From 'antarchistic' + '-al' suffix (common in older English for creating variant adjectives). A more formal or archaic version of 'antarchistic.'
Older political writings love piling on these suffixes—'antarchistical' sounds incredibly formal, which is probably why political thinkers used it to make their ideas sound more serious and scholarly!
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