ADJ-GRADED (思想)不清楚的,不坚定的,糊涂的 If you say that someone is wishy-washy, you are critical of them because their ideas are not firm or clear. (思想)不清楚的,不坚定的,糊涂的 [informal, disapproval]
If there's anything I can't stand it's an indecisive, wishy-washy customer.