Smoking on airplanes, nowadays (5)
I believe the answer is:
taboo
(Other definitions for taboo that I've seen before include "Prohibited; ban" , "Social prohibition" , "(Irrational) prohibition" , "Subject to prohibition" , "Anathema" .)
I believe the answer is:
taboo
(Other definitions for taboo that I've seen before include "Prohibited; ban" , "Social prohibition" , "(Irrational) prohibition" , "Subject to prohibition" , "Anathema" .)