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

Safe

Safe as a tortoise under its shell.
—Alexander Adam

Safe as a blockhouse.
—Anonymous

Safe as a child on its mother’s breast.
—Anonymous

Safe as a crow in a gutter.
—Anonymous

Safe as a mouse in a cheese.
—Anonymous

Safe as a mouse in a mill.
—Anonymous

Safe as a rat in a trap.
—Anonymous

Safe as a sardine.
—Anonymous

Safe as Solomon’s birds.
—Anonymous

Safe as a thief in a mill.
—Anonymous

Safe as a wall of brass.
—Anonymous

Safe as caged.
—Anonymous

Safe as brandy.
—Miss A. E. Baker (Northamptonshire Glossary)

Saif tu take as a fotograph.
—Josh Billings

Safe from harm as sings the lark when sucked up out of sight in vortices of glory and blue air.
—Elizabeth Barrett Browning

Safe as the Bank of England.
—Edward Bulwer-Lytton

As safe and sacred from the step of man
As an invisible world.
—Samuel Taylor Coleridge

Safe as my life.
—R. Davenport (New Tricks to Cheat the Devil)

Safe as a stone in a peach.
—Alfred Head

Safe as a fish.
—Help to Discourse

Safe as a fox in a trap.
—Charles Kingsley

Safe as in the bank.
—Richard Le Gallienne

Safe as in bed.
—Charles Reade

Safe as Priam is in Ilion.
—William Shakespeare

Safe as thy gold in the strong box.
—William Somerville

Safe as hunted wolf within his lair.
—Theodore Watts-Dunton