Definition of draughtproof in English:

draughtproof

Line breaks: draught|proof

Entry from British & World English dictionary

adjective

Sealed so as to keep out draughts: fit double glazing and make your doors draughtproof

verb

[with object] Back to top  
Make (a building, door, or window) draughtproof: (as noun draughtproofing) simple draughtproofing is relatively inexpensive

Definition of draughtproof in:

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Pronunciation: ˈflɪp(ə)nt
adjective
not showing a serious or respectful attitude