definition immune
See all translations. uk â /ÉªËmjuËn/ us â /ÉªËmjuËn/. âº protected against a particular disease by particular substances in the blood: Most people who've had chickenpox once are immune to it for the rest of their lives. He seems to be immune to colds - he just never gets them. C2 [ after verb ] not affected or upset by a particular type of behaviour or emotion: