|Noah Webster's Dictionary|
1. (v. t.) To defeat of expectation or hope; to hinder from the attainment of that which was expected, hoped, or desired; to balk; as, a man is disappointed of his hopes or expectations, or his hopes, desires, intentions, expectations, or plans are disappointed; a bad season disappoints the farmer of his crops; a defeat disappoints an enemy of his spoil.
2. (v. t.) To frustrate; to fail; to hinder of result.
Int. Standard Bible Encyclopedia
dis-a-point': "To disappoint" may be used transitively or intransitively. In the former case it naturally has a more forceful meaning. Therefore the Revised Version (British and American) changes the translation of the King James Version wherever "disappoint" is used with an object: Job 5:12, "frustrateth"; Psalm 17:13, "confront him," the Revised Version, margin "forestall"; Judith 16:6, "brought them to nought"; but the Revised Version (British and American) retains "disappoint" where the person wh disappoints is not expressed. Compare Proverbs 15:22.
Disappoint (2 Occurrences)
Romans 5:5 and hope doesn't disappoint us, because God's love has been poured out into our hearts through the Holy Spirit who was given to us. (WEB WEY NAS RSV NIV)
Psalms 17:13 Arise, O LORD, disappoint him, cast him down: deliver my soul from the wicked, which is thy sword: (KJV WBS)