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

• one of these days
• one one's coattails
• one percent
• one shot
• one thousand
• one thousand million
• one thousand thousand
• one up
• one-and-one
• one-armed
• one-armed bandit
• one-billionth
• one-celled
• one-dimensional
• one-dimensional language
• one-dimensionality
• one-eared
• one-eighth
• one-eyed
• geotropic
• geotropism
• Geraint
• Gerald Ford
• Gerald R. Ford
• Gerald Rudolph Ford