WordNet (r) 3.0 (2006):

Isaiah
    n 1: (Old Testament) the first of the major Hebrew prophets (8th
         century BC)
    2: an Old Testament book consisting of Isaiah's prophecies [syn:
       Isaiah, Book of Isaiah]

Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "Isaiah":
   Abraham, Amos, Daniel, Ezekiel, Haggai, Hosea, Isaac, Jacob,
   Jeremiah, Joel, Jonah, Joseph, Joshua, Malachi, Micah, Moses,
   Nahum, Samuel, Zephaniah, prophet, vates sacer



Easton's 1897 Bible Dictionary:

Isaiah
   (Heb. Yesh'yahu, i.e., "the salvation of Jehovah"). (1.) The son
   of Amoz (Isa. 1:1; 2:1), who was apparently a man of humble
   rank. His wife was called "the prophetess" (8:3), either because
   she was endowed with the prophetic gift, like Deborah (Judg.
   4:4) and Huldah (2 Kings 22:14-20), or simply because she was
   the wife of "the prophet" (Isa. 38:1). He had two sons, who bore
   symbolical names.

     He exercised the functions of his office during the reigns of
   Uzziah (or Azariah), Jotham, Ahaz, and Hezekiah (1:1). Uzziah
   reigned fifty-two years (B.C. 810-759), and Isaiah must have
   begun his career a few years before Uzziah's death, probably
   B.C. 762. He lived till the fourteenth year of Hezekiah, and in
   all likelihood outlived that monarch (who died B.C. 698), and
   may have been contemporary for some years with Manasseh. Thus
   Isaiah may have prophesied for the long period of at least
   sixty-four years.

     His first call to the prophetical office is not recorded. A
   second call came to him "in the year that King Uzziah died"
   (Isa. 6:1). He exercised his ministry in a spirit of
   uncompromising firmness and boldness in regard to all that bore
   on the interests of religion. He conceals nothing and keeps
   nothing back from fear of man. He was also noted for his
   spirituality and for his deep-toned reverence toward "the holy
   One of Israel."

     In early youth Isaiah must have been moved by the invasion of
   Israel by the Assyrian monarch Pul (q.v.), 2 Kings 15:19; and
   again, twenty years later, when he had already entered on his
   office, by the invasion of Tiglath-pileser and his career of
   conquest. Ahaz, king of Judah, at this crisis refused to
   co-operate with the kings of Israel and Syria in opposition to
   the Assyrians, and was on that account attacked and defeated by
   Rezin of Damascus and Pekah of Samaria (2 Kings 16:5; 2 Chr.
   28:5, 6). Ahaz, thus humbled, sided with Assyria, and sought the
   aid of Tiglath-pileser against Israel and Syria. The consequence
   was that Rezin and Pekah were conquered and many of the people
   carried captive to Assyria (2 Kings 15:29; 16:9; 1 Chr. 5:26).
   Soon after this Shalmaneser determined wholly to subdue the
   kingdom of Israel. Samaria was taken and destroyed (B.C. 722).
   So long as Ahaz reigned, the kingdom of Judah was unmolested by
   the Assyrian power; but on his accession to the throne, Hezekiah
   (B.C. 726), who "rebelled against the king of Assyria" (2 Kings
   18:7), in which he was encouraged by Isaiah, who exhorted the
   people to place all their dependence on Jehovah (Isa. 10:24;
   37:6), entered into an alliance with the king of Egypt (Isa.
   30:2-4). This led the king of Assyria to threaten the king of
   Judah, and at length to invade the land. Sennacherib (B.C. 701)
   led a powerful army into Palestine. Hezekiah was reduced to
   despair, and submitted to the Assyrians (2 Kings 18:14-16). But
   after a brief interval war broke out again, and again
   Sennacherib (q.v.) led an army into Palestine, one detachment of
   which threatened Jerusalem (Isa. 36:2-22; 37:8). Isaiah on that
   occasion encouraged Hezekiah to resist the Assyrians (37:1-7),
   whereupon Sennacherib sent a threatening letter to Hezekiah,
   which he "spread before the Lord" (37:14). The judgement of God
   now fell on the Assyrian host. "Like Xerxes in Greece,
   Sennacherib never recovered from the shock of the disaster in
   Judah. He made no more expeditions against either Southern
   Palestine or Egypt." The remaining years of Hezekiah's reign
   were peaceful (2 Chr. 32:23, 27-29). Isaiah probably lived to
   its close, and possibly into the reign of Manasseh, but the time
   and manner of his death are unknown. There is a tradition that
   he suffered martyrdom in the heathen reaction in the time of
   Manasseh (q.v.).

     (2.) One of the heads of the singers in the time of David (1
   Chr. 25:3,15, "Jeshaiah").

     (3.) A Levite (1 Chr. 26:25).

     (4.) Ezra 8:7.

     (5.) Neh. 11:7.


Hitchcock's Bible Names Dictionary (late 1800's):

Isaiah, the salvation of the Lord