expensive; requiring a lot of money to purchase

causing loss or hardship; disadvantageous

महंगा

English Usage: The watch was too costly for my budget.

Hindi Usage: घड़ी मेरे बजट के लिए बहुत महंगी थी।

involving high risk

जोखिमपूर्ण

English Usage: The project turned out to be a costly endeavor.

Hindi Usage: यह परियोजना एक जोखिमपूर्ण प्रयास साबित हुई।