immune
im.mune \im-'yu:n\ aj [L immunis, fr. in- + munia services, obligations; akin to L]munus service 1a: FREE, EXEMPT {~ from taxation} 1b: not susceptible or responsive {~ to antibiotics} 2a: having a high degree of resistance to a disease {~ to diphther ia} 2b1: having or producing antibodies to a given antigen {~ to horse serum} 2b2: produced in response to the presence of a given antigen {~ ag glutinins} - immune n