Misbegotten (adjective)

1. Conceived or brought into existence under unfavorable circumstances.
2. Badly planned or executed; mistaken.
3. Illegitimate or born out of wedlock.

Origin:

Middle english, from old english, from mis- + begetten, past participle of begetten, to beget.

Examples:

1. The misbegotten project was plagued by problems from the start.
2. The misbegotten scheme ended in disaster, causing great harm to all involved.
3. His misbegotten policies led to the collapse of the company.
4. The misbegotten relationship was never meant to be, causing much pain and heartache.
5. Her misbegotten son was raised in poverty, never knowing his father.