To be afraid of; to show fear or be frightened (used when someone fears something).
子供は暗い部屋を怖がることが多い。
Children are often afraid of dark rooms.
彼女は犬を怖がって近づけない。
She is scared of dogs and can't get close to them.
怖がらないで、ゆっくり話してごらん。
Don't be afraid; try speaking slowly.
彼は高いところを怖がって、展望台に登らなかった。
He is afraid of heights and didn't go up to the observation deck.