Answer: tone
Tone is the attitude an author expresses through words.
Some people would think that the answer would be mood, but mood would be a whole different example. Mood is the attitude through signs of face and actions, tone is by the voice or the words from mouth.
Connotation is something that is implied, not explicitly told.
For example, the connotation of school could be a place to get knowledge for one person, and for another person it could mean that school is a place to enjoy with your friends.
The word "liar" has a negative connotation.
