"sick, ill, suffering," 1590s, present-participle adjective from ail (v.).
my poor ailing grandmother
*aik-
aikido
ail
ailanthus
aileron
ailing
ailment
ailurophile
ailurophobia
aim
*aim-
)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}