i Register
In some senses, feeble is marked as obsolete. Watch for register when choosing this word.
adj
Deficient in physical strength.
Though she appeared old and feeble, she could still throw a ball.
Pent up in Utica he vainly forms A poor Epitome of Roman Greatneſs, And, cover’d with Numidian Guards, directs A feeble Army, and an empty Senate, Remnants of mighty Battels fought in vain.
Lacking force, vigor, or effectiveness in action or expression; faint.
That was a feeble excuse for an example.
verb
To make feeble; to enfeeble.