What are the word records for antigram (antonymous phrase containing the same letters), longest?

language/english/meaning/synonyms.and.antonyms/synonymic.and.antonymic.reversals.and.transposals/antigram New

New entry, edited from material collected for the archive and not yet in a released version.

Problem

What are the word records for antigram (antonymous phrase containing the same letters), longest?
(Meaning / Synonyms and Antonyms / synonymic and antonymic reversals and transposals [8-111])

[ Editor: question framed by the editor from the headings of the Taxonomy of Wordplay. ]

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[ Editor: from the Taxonomy of Wordplay, www.questrel.com, retrieved 28 Oct 2026. Classes (common, uncommon, hyphenated words, phrases), scores, ties (-t) and the source codes in brackets are explained in language/english/word.records.introduction. ]

common word: protectionism : nice to imports (13)

-- Taxonomy of Wordplay, www.questrel.com