Synonyms of the word

prohibitory

• adj. That serves to prohibit or forbid.

preventative

• adj. Alternative form of preventive.
• n. Alternative form of preventive.

preventive

• adj. Preventing, hindering, or acting as an obstacle to.
• adj. Carried out to deter military aggression.
• adj. Slowing the development of an illness; prophylactic.
• adj. (obsolete) Going before; preceding.
• n. (dated) A thing that prevents, hinders, or acts as an obstacle to.
• n. (nonstandard) A thing that slows the development of an illness.
• n. A contraceptive, especially a condom.

prohibitive

• adj. Tending to prohibit, preclude, or disallow.
• adj. Costly to the extreme; beyond budget.
• n. (linguistics) negative imperative.