ころっと

1. 1sound of something small rolling once (often into a hole) Translated by Jiyomi
2. 2easily Translated by Jiyomi
3. 3suddenly Translated by Jiyomi
4. 4completely (e.g. forgetting) ; utterly Translated by Jiyomi
5. 5disappointing Translated by Jiyomi
6. 6curling up into the fetal position ; going to sleep suddenly Translated by Jiyomi

Other writings and readings

JMdict entry 2121230. Source and licence.