Noah Webster's Dictionary 1. (v. t.) To make weak; to lessen the strength of; to deprive of strength; to debilitate; to enfeeble; to enervate; as, to weaken the body or the mind; to weaken the hands of a magistrate; to weaken the force of an objection or an argument. 2. (v. t.) To reduce in quality, strength, or spirit; as, to weaken tea; to weaken any solution or decoction. 3. (v. i.) To become weak or weaker; to lose strength, spirit, or determination; to become less positive or resolute; as, the patient weakened; the witness weakened on cross-examination.

Multi-Version Concordance Weaken (5 Occurrences) Romans 4:19 Without being weakened in faith, he didn't consider his own body, already having been worn out, (he being about a hundred years old), and the deadness of Sarah's womb. (Root in WEB ASV RSV NIV) Isaiah 14:12 How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations! (KJV WBS YLT NAS) Isaiah 38:14 I chattered like a swallow or a crane. I moaned like a dove. My eyes weaken looking upward. Lord, I am oppressed. Be my security." (WEB) Jeremiah 5:3 O Lord, do not your eyes see good faith? you have given them punishment, but they were not troubled; you have sent destruction on them, but they did not take your teaching to heart: they have made their faces harder than a rock; they would not come back. (See NAS) Jeremiah 38:4 Then the princes said to the king, Let this man, we pray you, be put to death; because he weakens the hands of the men of war who remain in this city, and the hands of all the people, in speaking such words to them: for this man doesn't seek the welfare of this people, but the hurt. (Root in WEB KJV JPS ASV DBY WBS RSV)