unstuck

unstuck汉语翻译：
a. 松开的, 紊乱的
unstick的过去式和过去分词英语解释：
形容词 unstuck:

free

thrown into a state of disorganization or incoherence同义词：undone

I didn't open your letter, the envelope came unstuck.我没有拆你的信，信封本来就没粘牢。

This envelope has come unstuck.这个信封开了。