【惘然若失】〖wng rán ruò sh〗[disconcertedly feel lost; be all adrift; feel disturbed as if having lost sth; look blank]

惘惑公企变荒野，

然疑全民工失业。

若出一轨寡头富，

失望悲观受剥削。

心情不舒畅，好像丢掉了什么东西似的。Not in good mood, as if had lost something.同：怅然若失、若有所失。反：胸有成竹。