1. Invulnerable to fear or intimidation
   - audacious, brave, dauntless, fearless, hardy, intrepid

See also: bold

• sanitarian
• sanitariness
• sanitarium
• sanitary
• sanitary code
• sanitary condition
• sanitary landfill
• sanitary napkin
• sanitary towel
• sanitate
• sanitation
• sanitation department
• sanitisation
• sanitise
• sanitised
• sanitization
• sanitize
• sanitized
• sanity
• sannup
• sannyasi
• sannyasin
• sans
• sans serif
• sansculotte