ㅋㅋㅋ (“kkk”) and ㅎㅎㅎ (“hhh”) are usually used to indicate e- laughter in Korean. ‘ㅋ’, is a Korean Jamo consonant representing a “k” sound, and ‘ㅎ’ represents an “h” sound. Both “ㅋㅋㅋ” and “ㅎㅎㅎ” represent laughter which is not very loud.

What kind of words are usually used to express the sound or stat. Yeah. We use “haha” or “heehee” or “hehehe.” During online chat, though, we can use chatspeak abbreviations/words like lol (laughing out loud), rofl (rolling on the floor laughing), and lmao (laughing my butt off).

LMAO — “laughing my ass off” LOL — “laughing out loud”, or “lots of laughs” (a reply to something amusing)

chuckle

1. cackle.
2. chortle.
3. crow.
4. exult.
5. guffaw.
6. hee-haw.
7. laugh.
8. smile.

And there are ways to describe what the mouth is doing when someone smiles: mouth upturned. mouth twitched (quick smile) mouth quirked/quirked up/quirked at the corners….For one thing, there are multiple ways to indicate that someone is smiling:

1. grinning.
2. beaming.
3. laughing.
4. giggling.
5. chuckling.
6. simpering.
7. sneering.

Gelotology (from the Greek γέλως gelos “laughter”) is the study of laughter and its effects on the body, from a psychological and physiological perspective. Its proponents often advocate induction of laughter on therapeutic grounds in alternative medicine.

noun. the action or sound of laughing. an inner quality, mood, disposition, etc., suggestive of laughter; mirthfulness: a man of laughter and goodwill. an expression or appearance of merriment or amusement.

It is a response to certain external or internal stimuli. Laughter can arise from such activities as being tickled, or from humorous stories or thoughts. Most commonly, it is considered an auditory expression of a number of positive emotional states, such as joy, mirth, happiness, relief, etc.