The most drafty; having the greatest amount of noticeable air currents.
Superlative form of 'draughty,' using the -est suffix to indicate the maximum degree of the quality of being drafty.
Superlatives like 'draughtiest' show how English builds complexity from simple roots—we could say 'most drafty' but '-est' is faster and comes from Old English traditions of comparison that go back over a thousand years.
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