Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Careless

Carelessly as hurls the moth her wing
Against the light wherein she dies.
—Lord Byron

Careless as the Salmon with its million young.
—Richard Le Gallienne

Careless as the wind.
—William J. Linton

Careless as a man in his first state.
—Edward Verrall Lucas

Careless as gods for who might live or die.
—William Morris

Careless as the course of a meteor.
—Ossian

Careless as the young flower tossing on the summer breeze.
—Ouida

Carelessly as the blossoming trees.
—Alexander Smith

Careless as are the brooks, or birds that sing,
Of any other song of brook or bird.
—John T. Trowbridge

Careless … as Christians of their souls.
—Francis H. Williams

Careless as the child at play.
—William Winter

Careless as if nothing were.
—William Wordsworth