The word "thousand" is normally used to refer to a numerical value of 1000. However, there are several synonyms for the word "thousand" that can be used to add variety to one's writing. Some of these synonyms include "millennium," "kilo," "grand," "large number," "myriad," "heaps," and "tons." These words can be used interchangeably with "thousand" depending on the context of the sentence. Using synonyms can make writing more interesting and engaging for readers while avoiding the overuse of certain words. It's important to choose the right synonym that fits the tone and meaning of the sentence.