C♯dim

C♯1E♭3G♭5

Two minor thirds stacked. The fifth is diminished, so it cannot be dropped without losing the chord.

Written the other way round it is D♭dim — the same twelve keys on a piano, a different piece of notation.

on ukulele on piano the scale

Every fingering that fits a hand

Fig. 2

x45050

easy

Fig. 3

x42020

easy

Fig. 4

x42050

easy

Fig. 5

x45020

easy

Fig. 6

x42023

moderate

What is true of it

C♯dim is C♯, E and G — 1, b3 and b5 counted from C♯.

The easiest of the 5 fingerings below is x45050: 3 fingers, held at the 4th fret.

None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.

1 string stays silent.

Where its notes are on the neck

Fig. 7 — first 12 frets

The brass dots are C♯, the root. Everything else is a chord tone with its degree printed in it.

With a different note underneath

first inversion

C♯dim/E

045050

second inversion

C♯dim/G

342020

An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.

C♯ in other shapes

C♯major C♯mminor C♯augaugmented C♯5power chord C♯sus2suspended second C♯sus4suspended fourth

Cdim Ddim D♯dim E♭dim Edim Fdim F♯dim G♭dim all 374