In Hindi, adjectives are often made from cognate nouns by changing an initial vowel इ to the vowel ऐ and appending the suffix -इक (in maatraa form). Here are a few examples:
विश्व (world) -> वैश्विक (global / worldwide)
दिन (day) -> दैनिक (daily)
विकल्प (option)-> वैकल्पिक (optional)