| Gasa | |
| Hangul | 가사 |
|---|---|
| Hanja | 歌詞 also 歌辭 |
| Revised Romanization | gasa |
| McCune–Reischauer | kasa |
Gasa (or Kasa) was a form of poetry popular during the Joseon Dynasty in Korea. Gasas were commonly sung, and were popular among yangban women. Jeong Cheol, a poet of the 16th century, is regarded as having perfected the form, which consisted of parallel lines, each broken into two four-syllable units. The form had first emerged during the Goryeo period.
In modern Korean, the word is also synonymous with "lyrics of a song" in the context of modern music, an that is shared with Japanese and Chinese.