1757, from gas (n.1) + -y (2). Related: Gassily; gassiness.
gas-mask
gasohol
gasoline
gasometer
gasp
gassy
gast
gastrectomy
gastric
gastritis
gastro-
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}