The quality or state of being doubtless; certainty or freedom from doubt.
Formed from 'doubtless' (adjective) plus the abstract noun suffix '-ness.' This follows standard patterns for creating nouns expressing qualities or states, though it's rarely used since 'certainty' serves the same purpose more commonly.
While we have 'doubtlessness,' we rarely use it because English speakers prefer simpler words like 'certainty'—but in older literature, doubtlessness appears in formal proclamations where the writer wanted to emphasize not just certainty but the complete absence of doubt.
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