Definition

The perceived emotional quality, attitude, or mood conveyed through written words, inflection of language, word choice, or punctuation; the implicit feeling behind a message.

Example Usage

I know you're just joking, but your tone came across as really mean.

Origin

From the musical sense of pitch and quality of sound; extended to the emotional 'color' of communication.

Fun Fact

Tone is one of the most misunderstood elements of text-based communication, as readers often project their own emotional state onto ambiguous messages.

Source: Definition backfill (hailey)