SWELTER

I. verb (~ed; ~ing) Etymology: Middle English sweltren, frequentative of swelten to die, be overcome by heat, from Old English sweltan to die; akin to Gothic swiltan to die Date: 14th century intransitive verb to suffer, sweat, or be faint from heat, to become exceedingly hot , transitive verb to oppress with heat, exude , II. noun Date: 1851 a state of oppressive heat, welter , an excited or overwrought state of mind ; sweat