Not have a good word to say for somebody/something
Definition 1 of 1
Pro Tip 1/3Negative Nuance
This phrase has a strong negative tone, suggesting deep disapproval or dislike. 
She's so pessimistic that she doesn't have a good word to say for any of her colleagues.
Pro Tip 2/3Colloquial Usage
The phrase is informal and typically used in casual conversation rather than formal writing. 
At family gatherings, my uncle does not have a good word to say for any politician.
Pro Tip 3/3Consistent Criticism
It implies that the person criticizes habitually, not just on one occasion. 
Megan does not have a good word to say for the new policy, and it's been consistent since its introduction.