The state or quality of being without grief or sorrow; freedom from sadness.
From 'griefless' plus '-ness' (a noun-forming suffix), stacking suffixes to create an abstract noun for the condition itself.
This is a fascinating example of suffix stacking in English: grief (noun) → griefless (adjective) → grieflessness (abstract noun), showing how English can turn a simple emotion into a philosophical concept.
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