- To hypothesize is defined as to have a theory or an assumption.
An example of to hypothesize is reasoning that someone sold the car because they needed the money.
verbhy·poth·e·sized, hy·poth·e·siz·ing, hy·poth·e·siz·es
(third-person singular simple present hypothesizes, present participle hypothesizing, simple past and past participle hypothesized)
- (US) to hypothesise