अर्थ : Anything characterized by abrupt and extreme changes (especially up and down).
उदाहरण :
The economy has been on a roller coaster all year.
अर्थ : Elevated railway in an amusement park (usually with sharp curves and steep inclines).
पर्यायवाची : big dipper, chute-the-chute
Roller coaster ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Roller coaster ka matlab kya hota hai?