～がる（～がる）— show signs of feeling or wanting
弟 は 車 を ほし がります。
My younger brother wants a car.
～がる～がる
show signs of feeling or wanting
～がる
accent [0]In detail
Words
弟otoutomy younger brother
はwa(topic marker)
車kurumacar
をo(object marker)
ほしhoshiwant (欲しい stem)
がりますgarimasushows a desire (polite)
がる can describe outward signs of another person’s feelings or wishes. ほしがる means showing a desire for something; the thing wanted takes を here.
Coco-sensei