一字褒贬yīzì-bāobiǎn熟one word clearly expressing praise or censure—strict, deliberate choice of words；exact and precise wording

一字不差yīzì bùchà熟not a single word is mistaken/wrong

一字不识yīzì-bùlòu一字不漏；not miss even a word；not miss a single word—copy mechanically一字不漏地背出这首诗recite the poem exactly as it readsyīzì-bùshí〔动〕do not know a single character；do not know A from B；be absolutely illiterate

一字不提yīzì-bùtí；not say a single wordaboutmake no mention whatsoever

一字马yīzì-bùyì一字不易熟not change a single word—of writingso succinct that it's hard to make a change in the choice of words；succinct；tersecopy or plagiarize others'writing word for wordyīzì chángshézhèn一字长蛇阵；single-line battle array摆开一字长蛇阵string out in a long lineyīzìmǎ；体育splits

一字千金yīzì-qiānjīn熟a single word is worth a thousand pieces of gold—high-quality literary work or calligraphy

一字一句yīzìr一字儿；a row；a line一字儿排开stand in a rowyīzì-yībǎn一字一板熟enunciating each word deliberately；speaking unhurriedly and clearly他一字一板地讲了起来。With exasperating deliberateness, he began to speak.yīzì-yījù熟speak word by word；speak articulately/clearly

一字之差yīzìzhīchā熟difference of a single word

一字之师yīzìzhīshī熟one's single-correction teacher；one-word teacher

一字不苟yīzì bùgǒu熟in writingbe particular about every word one writes down