1
[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]（尤指女孩）漂亮的，好看的，标致的 If you describe someone, especially a girl, as
pretty, you mean that they look nice and are attractive in a delicate way.
2
[ADJ-GRADED 能被表示程度的副词或介词词组修饰的形容词]（地方或事物）漂亮的，美丽的（但无特殊之处） A place or a thing that is
pretty is attractive and pleasant, in a charming but not particularly unusual way.
3
[ADV 副词]很；颇；相当 You can use
pretty before an adjective or adverb to mean 'quite' or 'rather'.
→see usage note at:fairly
[ADV adj/adv]
[INFORMAL 非正式]
4
[PHRASE 短语]几乎；近乎；差不多 Pretty much or
pretty well means 'almost'.
5
[PHRASE 短语]处于有利的位置；处境优越 If you say that someone
is sitting pretty, you mean that they are in a good, safe, or comfortable position.
[V inflects]
[INFORMAL 非正式]
When the war started, they thought they were sitting pretty, because they had all that extra grain.
战争开始的时候，他们认为自己境况不错，因为他们粮食准备充足。
6
not a pretty sight→see: sight
；
Usage Note :
When you are describing someone's appearance, you generally use pretty and beautiful to describe women, girls, and babies. Beautiful is a much stronger word than pretty. The equivalent word for a man is handsome. Good-looking and attractive can be used to describe people of either sex. Pretty can also be used to modify adjectives and adverbs but is less strong than very. In this sense, pretty is informal.
当描述人的外貌时，通常用 pretty 和 beautiful 来描述妇女、女孩和婴儿。beautiful 比 pretty 语气强烈很多。描写男性的对应词是 handsome。good-looking 和 attractive 可用来描述两性。pretty也可以用来修饰形容词和副词，但是语气不如 very 强烈。表示这个意义时，pretty为非正式用语。