The most appropriate synonym of the word sully is contaminate.
- Sully means "to make dirty, impure, or dishonorable."
- Contaminate means "to make something impure or unclean by contact with something else."
The other words do not have the same meaning as sully.
- Disastrous means "causing great damage or harm."
- Insane means "having a severe mental illness that makes it difficult to think clearly, behave normally, or control one's emotions."
- Tumult means "a state of wild and noisy disorder or confusion."
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