hot as blazes
Also, hot as hell. Extremely warm, as in It was hot as blazes in that room, or I'm hot as hell and would love a cold shower. The first of these hyperbolic similes dates from the mid-1800s, the second from the early 1900s.
Words nearby hot as blazes
hostly,
hot,
hot air,
hot and bothered,
hot and heavy,
hot as blazes,
hot bed,
hot buttered rum,
hot button,
hot cake,
hot cap