That can be asked; usable in order to find the answer to a question.(adjective)
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Use "askable" in a sentence
""askable," active and approachable participants in their child's sexuality education."
"Equally irrelevant questions might have been devised for male candidates, but since the male officeholder was "normal," such questions were not only un-askable, but unthinkable."
"That's what being an askable parent means and that's the phrase --"