Intensity:
* Boisterous: Loud and cheerful
* Contagious: Easily spread to others
* Rumbling: Deep and resonant
* Shrill: High-pitched and piercing
* Soft: Gentle and quiet
* Uncontrollable: Difficult to stop
Quality:
* Amusing: Evoking amusement or lightheartedness
* Cheerful: Expressing joy or happiness
* Cackling: A harsh, broken sound
* Cracking: Short, sharp bursts
* Giddy: Lighthearted and carefree
* Hearty: Wholehearted and enthusiastic
* Hysterical: Uncontrollably funny
* Joyful: Expressing pure happiness
* Mirthful: Full of merriment
* Nervy: Nervous and forced
* Squealing: A high-pitched, excited sound
* Sweet: Pleasant and charming
* Triumphant: Expressing victory or success
Context:
* Awkward: Uneasy or embarrassed
* Bitter: Expressing resentment or anger
* Forced: Feigned or insincere
* Nervous: Anxious or uneasy
* Sarcastic: Mocking or ironic
* Sneering: Contemptuous or scornful
Other:
* Involuntary: Unintentional or spontaneous
* Melodic: Musical or harmonious
* Rhythmic: With a regular beat
You can also use compound adjectives to create more specific descriptions:
* Ear-splitting laughter: Extremely loud
* Gut-wrenching laughter: Deep and heartfelt
* Side-splitting laughter: Extremely funny
* Tears-of-joy laughter: Filled with happiness
Remember, the best adjective will depend on the specific context and the type of laughter you want to describe.