Opposed to or against antiphonal singing or chanting, particularly in religious or choral contexts.
From anti- (against) + siphonal (relating to antiphonal, from Greek anti- 'opposite' + phone 'sound'). Rare musical/liturgical term.
This word conflates two different 'anti-' prefixes which is confusing—'antisiphonal' mixes 'siphon' with 'antiphonal,' showing how similar-sounding words can get jumbled in language.
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