tangi
"younger sister" in spoken Kannada is tangi. It's a noun (fem.) that you'll first encounter in Lesson 17: Is your sibling older or younger than you? of the KannadaMaadi course, where Anu and Ravi use it in context.
Grammar note dative tangige
Heard in a real Bengaluru conversation
Words land faster when you hear them inside a real sentence. tangi is used in Lesson 17 (Is your sibling older or younger than you?, CEFR B1) — a short audio conversation between Anu and Ravi set in a recognisable Bengaluru situation.
Open Lesson 17 →