Step 1: Understanding the meaning.
The word "destroy" means to completely ruin, demolish, or reduce something to nothing.
Step 2: Analyze the options.
- Finish: Means to complete, not necessarily to ruin.
- Demolish: Correct, as it directly means to destroy.
- Stop: Means to halt, not destroy.
- (End: Refers to termination, but not always complete destruction.
Step 3: Conclusion.
Thus, the synonym of “destroy” is “demolish.”
Final Answer:
\[
\boxed{\text{demolish}}
\]