後顧之憂

1. • fears of trouble in the rear (idiom) family worries (obstructing freedom of action)
2. • worries about the future consequences
3. • often in negative expressions, meaning "no worries about anything"

Character by character

• 後(hòu)back
• 顧(gù)look after
• 之(zhī)(possessive particle, literary equivalent of 的 de)
• 憂(yōu)worry