Everything you've learned has been polite -요 speech. Today: how close friends actually talk — and the one rule that unlocks almost all of it at once.
Nearly every polite sentence you've built in this course becomes casual the same way.
Drop the final 요 and you have 반말. 있어요→있어, 바빠요→바빠, 갈까요→갈까, 공부했어요→공부했어 — it works across every pattern in this course.
The present-tense copula doesn't just drop 요 — it changes shape: 친구예요→친구야, 학생이에요→학생이야.
Casual pronouns and reaction words.
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저 isn't just casual-ized by dropping anything — it's replaced by a different word, and 가 contracts onto it irregularly.
Pick any phrase from earlier lessons and watch it turn casual.
Patterns from across the whole course, all in 반말.
10 questions on casual forms and when to use them.