/ ɪˈmjuːn; NAmE / adjective [ not usually before noun ]
1.
immune (to sth) that cannot catch or be affected by a particular disease or illness :
Adults are often immune to German measles.
2.
immune (to sth) not affected by sth :
You'll eventually become immune to criticism.
3.
immune (from sth) protected from sth and therefore able to avoid it
SYN exempt :
No one should be immune from prosecution.
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WORD ORIGIN
late Middle English (in the sense free from (a liability) ): from Latin immunis exempt from public service or charge, from in- not + munis ready for service. Sense 1 dates from the late 19th cent.