What letter is silent in poisonous?

Answer 1

In the word "poisonous," the letter "o" is silent. The "o" is not pronounced, and the word is pronounced as "POY-zuh-nus." The silent "o" is a common feature in English words, where certain letters are not pronounced but still affect the word's spelling and meaning.

Answer 2

The letter "p" is silent in the word "poisonous."