Worry about future troubles; a lingering concern about something that could cause problems later.
顾回头看。来自后方的忧患。指在前进过程中，担心后方发生问题。
《魏书·李冲传》朕以仁明忠雅，委以台司之寄，使我出境无后顾之忧。”
Before leaving for vacation, she took care of all the bills so she wouldn't have any rear worries.
Learn the next connected idiom: 后顾之忧 (hòu gù zhī yōu) → 忧心忡忡 (yōu xīn chōng chōng)
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