misbegotten

UK: /ˌmɪsbɪˈɡɒt^ən/ US: /ˌmɪsbɪˈgɑtən/ ,(mis′bi got′n)

WordReference Random House Learner's Dictionary of American English © 2025

mis•be•got•ten /ˌmɪsbɪˈgɑtən/   adj. 

1. born of parents who are not married to each other;
   illegitimate:
   his misbegotten son.
2. badly planned, made, or carried out:
   a misbegotten plan.

WordReference Random House Unabridged Dictionary of American English © 2025

mis•be•got•ten  (mis′bi got′n), adj. 

1. unlawfully or irregularly begotten;
   illegitimate:
   his misbegotten son.
2. badly conceived, made, or carried out:
   his misbegotten plan.

Also, mis′be•got′. 

• mis-¹ + begotten 1540–50

Collins Concise English Dictionary © HarperCollins Publishers::

misbegotten / ˌmɪsbɪˈɡɒt^ən/ adjective

1. unlawfully obtained: misbegotten gains
2. badly conceived, planned, or designed
3. Also: misbegot / ˌmɪsbɪˈɡɒt/ illegitimate