1. past tense of laugh in a loud, audible manner; to express amusement or mirth with considerable volume and sound
She laughed loudly at the comedian's joke.
Ela riu alto com a piada do comediante.
2. to express joy, amusement, or ridicule through audible laughter with increased volume
The children laughed loudly while playing in the park.
As crianças riram alto enquanto brincavam no parque.