out-

1.超越；超过greater, better, further, longer, etc.

2.在外面；向外；离开outside; outward ; away from

1.加在动词,分词或动名词前表示“出”,“向外”,“在外”,“超过”,“胜过”等意,如 outgo, outplay.

1.bigger, better, longer, etc., used with many verbs

2.outside, or away from, used with many nouns and adjectives

3.used for forming nouns and adjectives from verbs that are followed by “out”