"exposed to drafts of air," 1580s, from draft "current of air" + -y (2). Related: Draftiness.
Entries linking to drafty
draft n.
c. 1500, a spelling variant of draught (q.v.) to reflect change in pronunciation. By the end of the 19c. it was the established form in the military, commercial, and many technical sentences, and it is now almost universal in American English as conforming to the pronunciation.
The meaning "rough copy of a writing" (something "drawn") is attested from 14c.; that of "preliminary sketch from which a final copy is made" is from 1520s; that of "flow of a current of air" is from c. 1770. Of beer from the 1830s, in reference to the method of "drawing" it from the cask. Sense in bank draft is from 1745. The meaning "a drawing off a group for special duty" is from 1703, in U.S. especially of military service; the verb in this sense first recorded 1714. Related: Drafted; drafting.
-y 2
adjective suffix, "full of or characterized by," from Old English -ig, from Proto-Germanic *-iga- (source also of Dutch, Danish, German -ig, Gothic -egs), from PIE -(i)ko-, adjectival suffix, cognate with elements in Greek -ikos, Latin -icus (see -ic). Originally added to nouns in Old English; used from 13c. with verbs, and by 15c. even with other adjectives (for example crispy). Adjectives such as hugy, vasty are artificial words that exist for the sake of poetical metrics.