Easton's Bible Dictionary (1897)
Quick, “the Archite,” “the king’s friend” (1 Chr. 27:33). When David fled from Jerusalem, on account of the rebellion of Absalom, and had reached the summit of Olivet, he there met Hushai, whom he sent back to Jerusalem for the purpose of counteracting the influence of Ahithophel, who had joined the ranks of Absalom (2 Sam. 15:32, 37; 16:16-18). It was by his advice that Absalom refrained from immediately pursuing after David. By this delay the cause of Absalom was ruined, for it gave David time to muster his forces.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
HU'SHAI (rapid), an Archite, and a particular and faithful friend of David, 2 Sam 16:16. He gained such influence over Absalom as to prevail with his advice over Ahithophel, 2 Sam 17:14. During this time he remained David's friend.
Hitchcock's Bible Names (1869)
their haste; their sensuality; their silence