wishy-washy

1. ADJ If you say that someone is wishy-washy, you are critical of them because their ideas are not firm or clear. (思想)不堅定的; 不清楚的[非正式]

If there's anything I can't stand it's an indecisive, wishy-washy customer. 如果說我有什麽不能容忍，那就是優柔寡斷、挑三揀四的顧客。