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G diminished triad for guitar (Gdim)

Notes, positions, and inversions of the G diminished triad (Gdim) on the guitar fretboard: G · A# · C#.

Instrument
Root
Chord
Position (CAGED)
Strings
Toggle individual strings
Frets15
1224
Chord
Gdim
GA#C#
E
B
G
D
A
E
GA#C#GC#GA#C#GA#C#GA#GA#C#A#C#GA#GA#C#G35791512
Scroll horizontally to see the whole fretboard

Legend

G
Root
· R
A#
Third
· ♭3
C#
Fifth
· ♭5

Inversions

(strings 1·2·3)
Root position
fret 10
C#A#G
1st inversion
fret 3
GC#A#
2nd inversion
fret 7
A#GC#
See the Gdim arpeggio →

G diminished

The G diminished triad is made up of three notes: G · A# · C#.

It sounds unstable and dissonant, and rarely ends a musical phrase -- instead it's used as a passing chord (typically on the vii degree) to build tension before a resolution.