They will shriek and giggle, half-scared and half-delighted, when their father pretends to be a monster that will eat them up.
But Camille had to play her part—so she got mad at Sebastian on camera, trying not to giggle through the scene.
During her convention address, she had a tendency to giggle and look overwhelmed by the outpouring of affection from the crowd.
c.1500, probably imitative. Related: Giggled; giggling; giggly. As a noun from 1570s.