defensive

dɪˈfɛnsɪv

adjective

used or intended to defend or protect.

defensive barriers

defending,guarding,safeguarding,protecting,protective,shielding,screening,wary,watchful,averting,withstanding,opposing

SYNONYMS

avertingdefendingguardingopposingprotectingprotectivesafeguardingscreeningshieldingwarywatchfulwithstanding