1. Of biological parents not married to each other
   - illegitimately 
2. Of unwed parents
   "he was born out of wedlock"
   - outside marriage

Encyclopedia: Out of wedlock

• literary criticism
• literary genre
• literary hack
• literary pirate
• literary review
• literary study
• literary work
• literate
• literate person
• literati
• literatim
• literation
• literature
• Lithane
• litharge
• lithe
• lithe-bodied
• lithely
• litheness
• lithesome
• lithia
• lithia water
• lithiasis
• lithic
• lithification