The quality or state of being free from dust; the absence of dust or dust production.
Noun formed from 'dustless' (dust + -less) with the suffix '-ness'. A rare, technical term combining two productive English suffixes.
Words like 'dustlessness' show how English lets you build meaning by stacking suffixes—it's grammatically perfect but sounds absurdly formal, so you'd never actually hear someone say it in conversation!
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