[Serdechnyy]
"cordial, cardiac, warm-hearted" is Сердечный in Russian.
Сердечный means "cordial, cardiac, warm-hearted" in English.
Listen to the pronunciationWord #2652 of 6,000 by frequency in Russian.
У него случился сердечный приступ прямо на работе.
He had a heart attack right at work.