failing
5 occurrences across the corpus
King James Version
And among these nations shalt thou find no ease, neither shall the sole of thy foot have rest: but the LORD shall give thee there a trembling heart, and failing of eyes, and sorrow of mind:
Men’s hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken.
KJV Apocrypha (Catholic Deuterocanon)
Were partly vexed with monstrous apparitions, and partly fainted, their heart failing them: for a sudden fear, and not looked for, came upon them.
KJV Apocrypha (Eastern Orthodox Additions)
That after the time of that kingdom there shall arise great strivings, and it shall stand in peril of failing: nevertheless it shall not then fall, but shall be restored again to his beginning.
OT Pseudepigrapha
But when they had ended their prayers, they remained where they were by reason of their failing strength.