More drafty or having more noticeable air currents flowing through a space.
Comparative form of 'draughty,' from Old Norse 'dráttr' (drawing, pulling), evolving through Middle English to describe the effect of air being drawn through gaps or openings.
The British spelling 'draught' vs American 'draft' is a great example of how English spelling froze at different points—British English kept the 'gh' from Middle English even though nobody pronounces it, making 'draughtier' look much fancier than its function deserves!
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