To say that a concept, or subject, can be openly talked about, or mentioned. Not taboo.(adjective)
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Use "mentionable" in a sentence
""If we in public television can only make it clear that feelings are mentionable and manageable, we will have done a great service for mental health.""
"If you mention ladies “unmentionables,” do they then become mentionable?"
"In this consideration, it could be told that the performance of Bangladesh in Economic Activity in the year 2009 was mentionable and appreciating."