In the manner or direction of grapevines; relating to or considering something with regard to grapes or grapevines.
From 'grape' plus the suffix '-wise' (meaning in the manner of, or with respect to). The '-wise' suffix comes from Old English 'wīse' meaning manner or direction, and is used in words like clockwise, likewise, and otherwise.
The '-wise' suffix is having a modern resurgence in corporate jargon—'revenue-wise' and 'timeline-wise'—but linguists dislike it because it's vague and can be replaced with better prepositions. Grapewise is a historical example of this awkward construction from when the suffix was more productive.
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