mis ‧ be ‧ got ‧ ten /ˌmɪsbɪˈɡɒtn◂ $ -ˈɡɑː-/ BrE AmE adjective [only before noun] old-fashioned
1 . a misbegotten plan, idea etc is not likely to succeed because it is badly planned or not sensible
2 . a misbegotten person is completely stupid or useless:
You misbegotten fool!