a.

1. 松弛的；质地松的
   They are lax about their appearance.

   他们不修边幅。

2. 不严格的；马马虎虎的
3. 散漫的；放纵的
   lax morals

   放荡的行为

4. 易通便的；腹泻的
5. 【语】（元音）松弛的
6. 【植】（花簇）疏松的，散开的

n.

1. 松弛的元音

adj.

1. not sufficiently strict, severe, or careful.
2. (of the limbs or muscles) relaxed.
3. Phonetics  (of a speech sound, especially a vowel) pronounced with the vocal muscles relaxed. The opposite of tense¹.