Questions & Answers about Vântul este puternic acum.
In Romanian the definite article (“the”) is attached to the end of the noun, not a separate word.
• vânt = “wind” (indefinite)
• vântul = “the wind” (definite; -ul is the masculine-singular definite article)
Romanian adjectives normally follow the noun when they’re attributive, and in predicative position (after este) they function as complements. So in
• vântul este puternic
the adjective puternic (“strong”) naturally comes after the verb.
Adjectives must match the noun in gender and number.
• vânt is masculine singular → adjective takes the masculine-singular ending, which is zero here: puternic
If it were a feminine noun (e.g. apă “water”), you’d get apă puternică.