What is the opposite of Whole tone?

The opposite of Whole tone includes: Semitone.

Whole tone

An interval spanning two semitones, equivalent to a major second.

About Whole tone

The whole tone (also called a whole step or major secondMajor SecondAn interval spanning two semitones, equivalent to a whole tone or whole step.View full entry →) is the distance of two semitones — for example, from C to D or from E to F♯. It is one of the two building blocks of diatonicDiatonicPertaining to the seven notes of a major or natural minor scale without chromatic alteration.View full entry → scales: a major scaleMajor ScaleA seven-note scale with the pattern tone–tone–semitone–tone–tone–tone–semitoneView full entry → is constructed from a specific pattern of whole tones and semitones (T-T-S-T-T-T-S).