Tight and tightly are both adverbs that come from the adjective tight. They have the same meaning, but tight is often used instead of tightly after a verb, especially in informal language, and in compounds. * tight 和 tightly 均为源自形容词 tight 的副词，意思相同，但在动词后，尤其在非正式用语和复合词中，常用 tight 代替 tightly：◆packed tight塞得紧紧的◆a tight-fitting lid严实的盖子 Before a past participle tightly is used.过去分词前用 tightly：◆clusters of tightly packed flowers一簇簇密集的花