noun
General noun for the act or sound of laughing; can be used for happy, amused, or involuntary laughter.
See also: 笑う
彼の冗談に大きな笑いが起こった。
His joke brought a big laugh.
I couldn't stop laughing.
noun
Refers to a smile, often a gentle or pleasant one; overlaps with 笑顔 but 笑い can also imply a smiling expression or a soft laugh.
See also: 笑う
彼女の口元にほのかな笑いが浮かんだ。
A faint smile appeared on her lips.
noun
sneer; derisive laugh
Only when written 嗤い
Derisive or scornful laughter; often written with the rare kanji 嗤い to emphasize the negative nuance.
See also: 笑う
彼の失敗を見て、嗤いが漏れた。
A sneer escaped as they watched his failure.
noun
sex aids; erotic items
Euphemistic or historical term for sex-related items such as dildos, pornographic books, or erotic prints; now rare and mostly encountered in older texts.
江戸時代の笑い本は、現代のポルノ雑誌にあたる。
Edo-period 笑い本 were the equivalent of modern pornographic magazines.