1. Born out of wedlock
   - misbegot, misbegotten, spurious 
2. Of no value or worth
   "I was caught in the bastardly traffic"
   - mean

See also: contemptible, illegitimate

• castrated
• castration
• castration anxiety
• castrato
• Castries
• Castro
• Castroism
• casual
• casually
• casualness
• casuals
• casualty
• Casualty Care Research Center
• Casuaridae
• Casuariiformes
• casuarina
• Casuarina equisetfolia
• Casuarinaceae
• Casuarinales
• Casuarius
• casuist
• casuistic
• casuistical
• casuistry
• casus belli