Grammar
Neyo vs Gunyo (네요 vs 군요): Which Reaction Ending Do I Use?
Use 네요. It is the one people say. Both endings mark a reaction to something you have just noticed, but 네요 is the ordinary spoken one and 군요 sounds more written or more to yourself. If you learn one, learn 네요.
This is a pair where the honest advice is lopsided rather than balanced, and most explanations treat them as equals.
What they both do
Neither is a plain statement. They mark that you have just found something out, which is why they are reactions rather than reports.
맛있네요. / 비가 오네요.
ma-sin-ne-yo. / bi-ga o-ne-yo.
Oh, this is good. / Oh, it's raining.
Compare that to 맛있어요, which simply says it is good. 맛있네요 says you have just tasted it and are reacting, and the difference is exactly the thing that makes a learner sound present in the conversation rather than reporting.
Where 군요 sits
맛있군요.
ma-sit-kku-nyo.
Ah, so it is good.
It leans towards working something out rather than reacting to it. You meet it in writing, in drama dialogue, and from older speakers, and it can sound stiff coming from a learner in a casual moment.
구나 is the casual form of the same ending, used to yourself or to somebody close, and that is where you are most likely to meet the family at all. Note also that after an action verb this ending comes out as 는군요: 가는군요, not 가군요.
Why 네요 is worth having early
- It fits almost anywhere. Food, weather, somebody's news, a room you just walked into.
- It lets you take part early. A short reaction is a real turn before you are ready to give a longer answer.
- It keeps you in the conversation. A reaction is a turn. Silence is not, and the gap between them is most of what makes an exchange feel alive.
One thing to watch
네요 is for something new to you. Using it about something you already knew sounds odd, in the way that saying "oh, it's raining" would if you had been standing in the rain for an hour.
The short version
Learn 네요 and use it often. Recognise 군요 when you hear it and leave it alone for now. A reaction holds your turn in a conversation you are only half following.
Feedback on whether your reaction fits
You can rehearse these aloud against a paused scene on your own. What is harder alone is judging whether the wording and the timing fit the moment. The page lists what happens and what it costs.
See the first session →