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

• speech defect
• speech disorder
• speech intelligibility
• speech organ
• speech pattern
• speech perception
• speech production
• speech rhythm
• speech sound
• speech spectrum
• speech therapist
• speech therapy
• speech-endowed
• speech-read
• speechifier
• speechify
• speechless
• speechlessly
• speechlessness
• speechmaker
• speechmaking
• speechwriter
• speed
• speed bump
• speed camera