godan verb (-ru), intransitive verb
feel hot; complain of the heat; swelter
Describes someone visibly suffering from heat, often used when a person complains or shows discomfort. Typically refers to atmospheric heat, not fever.
子供が暑がって、エアコンをつけた。
The child was complaining of the heat, so I turned on the air conditioner.
彼はいつも夏になると暑がる。
He always feels the heat when summer comes.