The word "for" is a common preposition in the English language that expresses purpose or aim. However, there are several other synonyms that can be used in place of "for" to add variety and enhance the meaning of the sentence. Some of these synonyms include "because of," "in order to," "with a view to," "on account of," "to the end of," "as a result of," "to achieve," "to obtain," "to attain," "towards," "intended for," "designed for," "suitable for," and "appropriate for." The use of these alternative synonyms not only adds more meaning to the sentence but also makes it more engaging and interesting to read.