开心 (kāixīn) means Happy (rejoice - make fun of). Below are 2 sentences on this site that use it — with pinyin, an English translation and audio. All of them were written by hand; none is machine generated.
From the graded readers
周末虽然短，可是我过得很 开心 。
zhōumò suīrán duǎn, kěshì wǒ guòde hěn kāixīn.
The weekend was short, but I enjoyed it.
Graded reader · HSK 2 · My Weekend
他们笑得很 开心 ，看起来大概二十岁左右。
tāmen xiào dehěn kāixīn, kànqǐlái dàgài èrshí suì zuǒyòu.
They were laughing happily and looked about twenty.
Graded reader · HSK 4 · An Old Photograph
Questions about 开心
How is 开心 used in a sentence?
This page shows 2 sentences using 开心 (kāixīn, "Happy (rejoice - make fun of)"), each with pinyin, an English translation and audio. Every one of them was written by hand for this site.
Are these sentences machine generated?
No. They come from the site's own dictionary examples, graded readers, travel phrasebook and grammar library — all written by a person. A word with no sentence gets no page here, rather than a page of invented ones.
Is 开心 an HSK word?
Yes — 开心 is on the official HSK 4 vocabulary list, and you can study it with the rest of that list on the HSK 4 page.
Where can I see the full entry for 开心?
The dictionary page for 开心 has its stroke order, its traditional form, every sense the dictionary lists and a character-by-character breakdown. It is linked at the top of this page.
Keep going
Read the full entry for 开心, write a sentence of your own and check it in the Pinyin Annotator, drill it with HSK 4 flashcards, or search the whole sentence bank for another word.
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