mis ‧ in ‧ form /ˌmɪsɪnˈfɔːm $ -ɔːrm/ BrE AmE verb [transitive usually passive]
[ Word Family: noun : ↑ informant , ↑ information , ↑ informer , ↑ misinformation , ↑ disinformation ; verb : ↑ inform , ↑ misinform ; adjective : ↑ informative ≠ UNINFORMATIVE , ↑ informed ≠ ↑ uninformed ; adverb : ↑ informatively ]
to give someone information that is incorrect:
I am afraid you’ve been misinformed.