Adjective declension in Croatian grammar is an essential concept for language learners. It involves changing the form of an adjective to agree with the noun it modifies in terms of gender, number, and case. Croatian adjectives have three genders (masculine, feminine, neuter), two numbers (singular, plural), and seven cases (nominative, genitive, dative, accusative, vocative, locative, instrumental). It’s crucial for students to practice adjective declension to improve their understanding of Croatian grammar and communication skills.