What is a abstract word for laughter?

There isn't one perfect abstract word for laughter, as the feeling and act of laughter encompass many complex emotions and physical expressions. However, here are some options depending on the specific nuance you want to capture:

General:

* Merriment: This implies a sense of lighthearted joy and amusement.

* Joviality: Suggests a cheerful and good-natured disposition.

* Mirth: Encompasses a sense of amusement and enjoyment.

* Gaiety: Emphasizes a cheerful and lively atmosphere.

More specific:

* Conviviality: Captures the shared enjoyment of laughter with others.

* Rapture: Suggests a state of intense joy and delight.

* Ebullience: Emphasizes a feeling of overflowing excitement and energy.

* Euphoria: Expresses a feeling of intense happiness and well-being.

Literary:

* Jubilation: A more formal and dramatic word for intense joy.

* Rhapsody: Suggests a state of great enthusiasm and exhilaration.

* Saturnalia: Refers to a period of unrestrained revelry and celebration.

The best choice depends on the context and the specific feeling you want to convey. You can also combine words to create a more nuanced description, such as "unbridled mirth" or "contagious gaiety."