Synonyms: fortified, bastioned
Definition: secured with bastions or fortifications
Similar words: protected
Definition: kept safe or defended from danger or injury or loss
Usage: the most protected spot I could find
Synonyms: fortified
Definition: having something added to increase the strength
Usage: fortified wine
Similar words: strong
Definition: having strength or power greater than average or expected
Usage: a strong radio signal; strong medicine; a strong man