hyponegation en · NOUN
Etymology
From hypo- (“deficient”) + negation.
Meanings
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(uncountable) Implied negation in a sentence.
A rich crosslinguistic vein for mining both hypernegation (which doesn't count when it "should") and hyponegation (which counts when it "shouldn't") is that of the inverse readings of proximative adverbs like almost and barely.
2010, Laurence R. Horn, The Expression of Negation, →ISBN, page 138: