In a way that is noticeable, significant, or large enough to be noticed.
From appreciable (able to be appreciated or noticed), plus -ly. From Latin appretiare (to value), showing the shift from 'valuable' to 'noticeable.'
When something changes 'appreciably,' it doesn't just happen a little—it happens enough that you actually notice it. The temperature appreciably dropped, your grades appreciably improved. It's more forceful than 'slightly' or 'somewhat.'
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