Indira Gandhi was the first female prime minister of India. She was a symbol of power. Her political background was very promising as her father was the first prime minister of independent India. From a young age, she formulated plans to get young people involved in the government. One of Indira's goals was to alleviate poverty and provide relief in the country. However, political unrest and the passing of laws that limited personal freedoms tainted her reputation at times.

Read this sentence from the passage.

However, political unrest and the passing of laws that limited personal freedoms tainted her reputation at times.

What does the word tainted mean in this context?
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transmitted
tarnished
complicated
suffered

The word "tainted" means tarnished in this context.