The longest word in the english dictionary is the famous disease casued by the inhalation of volcanic ashes, silica, etc.:
Pneumonoultramicroscopicsilicovolcanoconiosis
And the longest word in any language, doesn't belong to any specific language, because it's a scientific name. This is the scientific name of titin. This word, has amazingly 189,819 letters.
The narrator's acute hearing forces him to confess what he did. He was unable to ignore the loud sound of his own guilt and crime. In which the narrator also said "It is the beating of his hideous heart!"
I think Both of his sisters and his mother are very naive. His sisters and his mother have never left town. His sisters and his mother are very fond of him is the answer