疏忽
shūhū · HSK 7
neglect
🕳️ 疏 sparse + 忽 overlook = let it slip through the gaps; shūhū sounds like shoo-who
Both characters lean toward carelessness: 疏 means sparse or loose, 忽 means to overlook or do suddenly. Stack them and attention is so loose that things drop unnoticed — you neglect them.