The Collaborative International Dictionary of English v.0.48:

Terrorize \Ter"ror*ize\, v. t. [Cf. F. terroriser.]
   To impress with terror; to coerce by intimidation.
   [1913 Webster]

         Humiliated by the tyranny of foreign despotism, and
         terrorized by ecclesiastical authority.  --J. A.
                                                  Symonds.
   [1913 Webster]

WordNet (r) 3.0 (2006):

terrorize
    v 1: coerce by violence or with threats [syn: terrorize,
         terrorise]
    2: fill with terror; frighten greatly [syn: terrify,
       terrorize, terrorise]

Moby Thesaurus II by Grady Ward, 1.0:

99 Moby Thesaurus words for "terrorize":
   affright, alarm, assault, attack, awe, barbarize, batter,
   beat down, bludgeon, bluster, bluster out of, break, browbeat,
   brutalize, bulldoze, bully, bullyrag, burn, butcher, carry on,
   castrate, clamp down on, coerce, compel, cow, daunt, demoralize,
   despotize, destroy, domineer, domineer over, dragoon, enslave,
   fright, go on, grind, grind down, hammer, harass, hector, henpeck,
   huff, intimidate, keep down, keep under, lay waste, loot,
   lord it over, maul, mug, oppress, overawe, overbear, overmaster,
   override, pillage, press heavy on, rage, ramp, rampage, rant, rape,
   rave, repress, ride over, ride roughshod over, riot, roar, ruin,
   sack, savage, scare, scare to death, slaughter, sow chaos, spook,
   startle, storm, strong-arm, subjugate, suppress,
   systematically terrorize, tear, tear around, terrify, threaten,
   trample down, trample upon, tread down, tread upon, tyrannize,
   tyrannize over, unman, vandalize, violate, walk all over,
   walk over, weigh heavy on, wreck