When thinking about synonyms for the word "hypothesised", there are several possibilities to consider. Some options might include "postulated", "proposed", "suggested", "conjectured", "theorized", or "speculated". Each of these words carries with it a slightly different connotation, but all share a sense of putting forth a theory or idea without definitive proof. Depending on the context in which the word is used, one of these synonyms might be preferable over the others. Regardless of which word is ultimately chosen, the idea of hypothesising involves engaging in a thought exercise that requires careful consideration and attention to detail.