- unwritten law, rule, agreement, etc.
a law, etc. that everyone knows about and accepts even though it has not been made official 非书面的,不成文的,惯常的(法律、规定、协议等) an unwritten understanding that nobody leaves before five o’clock 五点钟之前谁都不离开的默契
(of a book, etc. )书等 not yet written 未写的;未写完的