Comparative form of drafty; more susceptible to drafts or having more air currents flowing through it.
From 'drafty' (adjective meaning having drafts of air) plus the comparative suffix '-er.' 'Drafty' comes from 'draft' meaning air current.
The difference between an old 'draftier' house and a modern insulated one represents centuries of building improvement—but some people still prefer those drafty rooms for the fresh air circulation.
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