The D-sharp half-diminished seventh chord (abbreviated "D#m7(b5) chord") is a four-note chord consisting of the notes D, F, A, and C. The chord is formed by lowering the fifth of a D-sharp minor seventh chord a half step.

Name
D-sharp half-diminished seventh chord
Synonyms
D-sharp half-diminished chord D-sharp minor seventh flat five chord
Notes
D F A C
Intervals
1 3 5 7
Chord symbol
Dm7(b5)
Alternative symbols
Dø Dø7 Dm7b5 D7(b5) Dmi7(b5) Dmin7(b5)
Type
Tetrad (four-note chord)

D#m7(b5) chord on piano

D#m7(b5) chord on guitar

D#m7(b5) chord on ukulele

D#m7(b5) chord on the staff