不成文

bùchéngwén

unwritten (rule)

不成材

bùchéngcái

worthless

不成熟

bùchéngshú

unripe

不成话

bùchénghuà

see [[不像話|不像话<bùxiànghuà>]]

难不成

nánbùchéng

Is it possible that ... ?

不成文法

bùchéngwénfǎ

unwritten law

不成样子

bùchéngyàngzi

shapeless

不成体统

bùchéngtǐtǒng

not according with decorum (idiom); scandalous

夜不成眠

yèbùchéngmián

to be unable to sleep at night

败不成军

bàibùchéngjūn

The army is completely routed. (idiom)

溃不成军

kuìbùchéngjūn

utterly defeated

不打不成器

bùdǎbùchéngqì

spare the rod and spoil the child (idiom)

不打不成才

bùdǎbùchéngcái

spare the rod and spoil the child (idiom)

恨铁不成钢

hèntiěbùchénggāng

lit. to hate iron for not becoming steel

无巧不成书

wúqiǎobùchéngshū

curious coincidence

独木不成林

dúmùbùchénglín

a lone tree does not make a forest (idiom)

不成功便成仁

bùchénggōngbiànchéngrén

to succeed or die trying (idiom)

不打不成相识

bùdǎbùchéngxiāngshí

don't fight, won't make friends (idiom); an exchange of blows may lead to friendship

高不成低不就

gāobùchéngdībùjiù

can't reach the high or accept the low (idiom); not good enough for a high post, but too proud to take a low one

一口吃不成胖子

yīkǒuchībùchéngpàngzi

lit. you cannot get fat with only one mouthful (proverb)