It describes a noun, indicating something that is absurd, illogical, or ridiculous.
For example:
* "The idea that the earth is flat is preposterous."
* "He made a preposterous claim about winning the lottery."
It describes a noun, indicating something that is absurd, illogical, or ridiculous.
For example:
* "The idea that the earth is flat is preposterous."
* "He made a preposterous claim about winning the lottery."