hot

the word "hot" descends directly from the old english adjective "hāt," meaning "having a high temperature, burning, fiery." this old english term has germanic roots, stemming from proto-germanic haitaz, which is itself derived from the proto-indo-european root kayd-, meaning "hot" or "to heat." the semantic journey is remarkably direct, with the core meaning of high temperature remaining stable for millennia. from this primary physical sense, the word naturally extended into figurative uses, such as describing spicy food (16th century) or intense popularity and excitement (20th century slang), leveraging the metaphorical link between heat and intensity.

the word "hot" is a simplex word of old english origin. it is not productively formed from smaller morphemes in modern english.