i-adjective
tightness in the chest; oppressive feeling in the chest
Describes a physical or emotional sensation of pressure, discomfort, or anxiety in the chest area. Often used for feelings of worry, sadness, or suffocation.
不安で胸苦しくなった。
I felt a tightness in my chest from anxiety.
この部屋は空気が悪くて胸苦しい。
This room is stuffy and makes my chest feel tight.