1. Not mated sexually 
2. Of someone who has no marriage partner

See also: single, unmarried, unmated

• tough
• tough guy
• tough it out
• tough luck
• tough-minded
• tough-skinned
• toughen
• toughened
• toughie
• toughly
• toughness
• Toulon
• Toulouse
• Toulouse-Lautrec
• toupe
• toupee
• toupeed
• touque
• tour
• tour de force
• Tour de France
• tour guide
• tour of duty
• tour operator
• touraco