marvelous; strange.-having the qualities of a monster; deviating greatly from the natural form or character; abnormal; as, a monstrous birth.-extraordinary in a way to excite wonder, dislike, apprehension, etc.; -- said of size, appearance, color, sound, etc.; as, a monstrous height; a monstrous ox; a monstrous story.-extraordinary on account of ugliness, viciousness, or wickedness; hateful; horrible; dreadful.-abounding in monsters.-exceedingly; very; very much.