President Obama is a thoughtful and deliberative decision maker who values debate and data.
Especially considered in combination with his attack on amendments, it is an assault on the deliberative character of the Senate.
Designed as the deliberative power, the Senate had become instead the negative power, the selfish power.
1550s, from Middle French délibératif or directly from Latin deliberativus "pertaining to deliberation," from past participle stem of deliberare (see deliberation). Related: Deliberatively; deliberativeness.