Instinctively, before they had a chance to open their mouths, she knew not only that they were bores but the quality of their boringness.
Source: wiktionary
Ranked by relevance and common usage.
Keep "boringness" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
If two options seem close, choose the one that best matches the audience and purpose of the sentence.
Choose a synonym only if it keeps the core idea of "boringness" intact in the sentence you are editing.
Check whether the replacement sounds more formal, casual, emotional, technical, or forceful than the original word.
Read the full sentence after the swap. Keep the synonym only when the sentence becomes clearer or more precise.
Review note: Synonym lists are ranked with lexical data and reviewed for practical writing value. Use the comparison notes, sentence evidence, and source labels together; a high-ranking synonym can still be wrong when the audience, register, or grammar changes.
After choosing a replacement for "boringness", read the sentence once for meaning and once for rhythm. The best synonym should feel natural in the full sentence, not only accurate in a word list.
If the synonym makes the sentence slower, vaguer, or more dramatic than intended, keep "boringness" or choose a simpler alternative from the closest-match group.
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
4 total sentences available.
Instinctively, before they had a chance to open their mouths, she knew not only that they were bores but the quality of their boringness.
Source: wiktionary
More than one critic has said, of course, that the boringness of the "New Novel" is a feature of its authenticity.
Source: wiktionary
An Analysis of Superficial Boredom and Its Relation to the Boring Object Heidegger does not begin his analysis of "superficial boredom" with boredom itself but with what is boring, or the boringness of a boring object.
Source: wiktionary
Friends with me, the poster child for imperfection and boringness.
Source: wiktionary
Closest matches include dreariness, dullness, insipidity, insipidness, monotony.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.