Being diminished, it is considered a dissonant interval.

A dissonant interval or chord is one which sounds unstable.

The notes C and Fsharp together make a dissonant interval.

Moving the hands further apart or closer together yields positions that emphasize dissonant intervals.

A tension is an additional chord member that creates a relatively dissonant interval in relation to the bass.

Sharp dissonant intervals and chords play prominent role in many traditional musical cultures.

It is particularly important to avoid placing dissonant intervals, especially 2nds, in low registers, unless we deliberately wish to create a brutal, harsh effect.

The major seventh interval is considered one of the most dissonant intervals after its inversion the minor second.

It emphasizes the dissonant intervals of the scale without requiring them to resolve.

Also, infants are able to differentiate between consonant and dissonant intervals.