Frank J. Wilstach, comp. A Dictionary of Similes. 1916.
Supple
Supple as a young panther.
—Anonymous
Supple as the neck of a swan.
—Anonymous
Supple as tobacco pouches.
—Honoré de Balzac
Supple … as a young cat.
—Wilkie Collins
Supple as water.
—Victor Hugo
Supple as a snake.
—Guy de Maupassant
Supple as if they were on springs.
—Guy de Maupassant
Supple as the Scythian’s bow.
—George Meredith
Supple as a peau de Suède glove.
—Octave Mirbeau
Supple as Damascus steel.
—Ouida