An archaic or dialectal variant spelling of alleviate, meaning to make something less severe or burdensome.
Middle English aleven, from Old French alever (to raise up, lighten), from Latin ad- (to) and levis (light). This form represents an older orthographic convention before standardization.
The word 'alleve' is a linguistic fossil showing how spelling was fluid and variable before dictionaries locked words into place—what we'd call a typo today was once simply an acceptable alternative.
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