adjective

having a high degree of heat or a high temperature.

it was hot inside the hall

very warm,balmy,summery,tropical,boiling,boiling hot,blazing hot,baking,scorching,roasting,searing,flaming,parching,blistering,oven-like,sweltering,torrid,sultry,humid,muggy,close,airless,oppressive,stifling,claggy

verb

make or become hot.

he hotted up the flask