adj.
1.capable of or reflecting the capability for correct and valid reasoning
2.in accordance with reason or logic
3.marked by an orderly, logical, and aesthetically consistent relation of parts
4.based on known statements or events or conditions
5.capable of thinking and expressing yourself in a clear and consistent manner
Idiom of the Day
speak up for (someone or something)
to speak in favor of someone or something
The politician is always willing to speak up for the poorest people in the city.