Definition of "apt"

a river […] apt to be forded by a lamb

1678, Antiquitates Christianæ: Or, the History of the Life and Death of the Holy Jesus: […], London: […] E. Flesher, and R. Norton, for R[ichard] Royston, […]

While we to Jove the pure libations pay, / Than Jove what apter claims the hallow'd lay?

1755, Callimachus, “The First Hymn of Callimachus. To Jupiter.”, in William Dodd, transl., The Hymns of Callimachus, […], London: […] The translator [William Dodd], […], page 1

This tree, if unprotected, is apt to be stripped of its leaves by a leaf-cutting ant.

1874, John Lubbock, Scientific Lectures / On Plants and Insects

that lofty pity with which prosperous folk are apt to remember their grandfathers

1886, Frederic Harrison, The Choice of Books

Since sick people were apt to be present, he could not always depend on a lively young crowd in the same ward with him, and the entertainment was not always good.

1961 November 10, Joseph Heller, “The Soldier in White”, in Catch-22 […], New York, N.Y.: Simon and Schuster, page 168

Fulfill your pleasure. Live a thousand years, / I shall not find myself so apt to die.

1599 (first performance), William Shakespeare, “The Tragedie of Iulius Cæsar”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene i]

Where our apt used to be they built a fancy condominium high-rise.Which at a lowly income none of us could ever really quite afford.

2010, David Dondero, Just a Baby in Your Momma's Eyes