Without heaven; lacking a heaven or the hope of heavenly reward; abandoned by divine grace.
From 'heaven' + '-less' (suffix meaning 'without'). The '-less' suffix derives from Old English 'leas' meaning 'without' or 'lacking.' This creates an adjective expressing deprivation or absence of the quality in the first part.
The '-less' suffix is the opposite of '-ful'—so while 'heavenful' would mean full of heaven, 'heavenless' means utterly bereft of it, which sounds pretty existential and dark! Medieval and religious texts sometimes used this word to describe states of damnation or spiritual despair.
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