If you say that someone is being mealy-mouthed, you are critical of them for being unwilling to speak in a simple or open way because they want to avoid talking directly about something unpleasant.
例句
He repeated that he did not intend to be mealy-mouthed with the country's leaders.他重申道，他和国家领导人谈话时无意拐弯抹角。
英英词典释义
Adjective
1. hesitant to state facts or opinions simply and directly as from e.g. timidity or hypocrisy;