Here are some possibilities depending on what you mean by "alteration":
* Informal variations: You could use slang like "lol" or "haha" to represent laughter in writing.
* Sound effects: "Hee hee" or "ho ho" are onomatopoeic representations of laughter.
* Figurative language: Words like "chuckle," "giggle," "guffaw," or "snicker" describe different types of laughter.
* Literary devices: A writer might use an alliteration like "laughing loud and long" or a metaphor like "a symphony of laughter" to create a specific effect.
Could you please clarify what kind of alteration you are looking for? That would help me give you a more specific answer!