The antonyms of *administered* are *mismanage* and *neglect*. While *mismanage* implies poor handling or ineffective management, *neglect* implies a lack of attention or care. These words can be used in various contexts such as business, parenting, and management to convey different meanings.

회사는 CEO가 자금을 *잘못 관리*했기 때문에 파산했습니다.

CEOが資金を*誤って管理*したため、会社は破産しました。

The company went bankrupt because its CEO *mismanaged* the funds.

집주인은 새는 수도꼭지를 수리하는 것을 *소홀히* 하여 아파트에 침수 피해를 입혔습니다.

家主は漏れのある蛇口の修理を*怠り*、アパートに水害を引き起こしました。

The landlord *neglected* to fix the leaky faucet, causing water damage to the apartment.