爽然若失

Explanation: Perplexed: idea uncertain way; regret it: as lost to rely on. Describe a mind free from the main, wistful air of emptiness. 　　Usage: Partial official; as predicate, attributive; containing derogatory, described the hearts of non-owners, empty coaching 　　Source: Qian Han, "Historical biography of Qu Yuan Jia theory": "read" service bird fu ", with life and death, light opinions, but also perplexed since the loss of men." 　　Examples: We naturally look forward to graduation, but one to graduate, but some ~. (Lu Xun "Zhaohuaxishi Suo Ji") Thesaurus:  Confused self-deactivation