taboo
adjective
proscribed by society as improper or unacceptable.
Used to express actions, events, or states that have not yet occurred but are expected to happen.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
City and State laws may also be made which will taboo the sale of spot eggs or eggs that will float on water.
From The Dollar Hen by Milo M. (Milo Milton) Hastings