Adim is a diminished, spelled A, C and Eb. In Open G tuning (D2 G2 D3 G3 B3 D4) the easiest shape is x21211, which sits at fret 1, needs a barre across 4 strings at fret 1 and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
A
C
Eb
Interval
1P
3m
5d
12 ways to play it
Ordered by how hard they are to fret, easiest first, one per position on the neck. Fret numbers are relative to the position marked beside each grid.
x21211sits at fret 1, needs a barre across 4 strings at fret 1 and mutes 1 stringxx7547sits at fret 4, spans 3 frets and mutes 2 strings7575xxsits at fret 5, needs a barre across 3 strings at fret 5 and mutes 2 stringsx1413141313sits at fret 13, needs a barre across 4 strings at fret 13 and mutes 1 stringxx781010sits at fret 7, spans 3 frets and mutes 2 stringsx81081010sits at fret 8, needs a barre across 3 strings at fret 8 and mutes 1 stringx1410141013sits at fret 10, needs a barre across 3 strings at fret 10 and mutes 1 stringx2121xsits at fret 1, needs a barre across 3 strings at fret 1 and mutes 2 stringsxxx211sits at fret 1, needs a barre across 2 strings at fret 1 and mutes 3 strings121211sits at fret 1 and needs a barre across 6 strings at fret 112121xsits at fret 1, needs a barre across 5 strings at fret 1 and mutes 1 stringxx1211sits at fret 1, needs a barre across 4 strings at fret 1 and mutes 2 strings
Keys Adim belongs to
Adim is diatonic to 8 of the 96 keys this app knows, playing a different role in each.