一字不提只字不提yī zì bù tí

make no mention whatsoever; not breathe a single word about; not say a word (about)
❍ 江大夫真忠实，他对贾克逊的罪行～，还说贾大夫是个学者。(曹禺《明朗的天》112) Dr Jiang was so loyal that he made no mention whatsoever of Jackson’s crime. On the contrary,he called Jackson a scholar.
❍ 凤姐见问，便要告诉给他事情管的话，一想，又恐他看轻了，只说得了这点儿香料，便许他管事了。因且把派他种花木的事，～，……(《红楼梦》281) Xifeng was tempted to tell him about the job of supervising tree-planting which they had in mind for him,but was afraid he might take it the wrong way and imagine she was offering it in return for a few aromatics. So she refrained,saying not a word about it.

一字不提yī zì bù tí

一个字也没有提出来。not to breathe a single word about, not say a word about