misunderstanding
US /ˌmɪs.ʌn.dɚˈstæn.dɪŋ/
UK /ˌmɪs.ʌn.dɚˈstæn.dɪŋ/

1.
a failure to understand something correctly
:
•
There was a complete misunderstanding about the meeting time.
•
Their argument was caused by a simple misunderstanding.
a failure to understand something correctly