Definitions:

1. free from danger or risk adjective
   • secure from harm
2. not likely to fail or give way adjective
   • the lock was secure

Synonyms:

• batten
• batten down
• ensure
• fix
• guarantee
• insure
• inviolable
• plug
• procure
• safe
• stop up
• untroubled

NearBy Words:

• securely
• secureness
• securer