Strongest synonyms:
* Destroyed: Completely ruined or broken.
* Obliterated: Wiped out completely, leaving no trace.
* Exterminated: Completely killed off.
* Eradicated: Completely eliminated or wiped out.
Slightly less extreme synonyms:
* Devastated: Caused great damage or destruction.
* Ruined: Completely destroyed or made useless.
* Shattered: Broken into pieces.
* Demolished: Completely destroyed by force.
* Wiped out: Completely destroyed or eliminated.
More abstract synonyms:
* Vanquished: Defeated completely.
* Overwhelmed: Completely defeated or overpowered.
* Crushed: Completely defeated or suppressed.
The best synonym to use will depend on the specific situation and the meaning you want to convey.