1, 2. Forbid, inhibit, prohibit, taboo indicate a command to refrain from some action. Forbid, a common and familiar word, usually denotes a direct or personal command of this sort: I forbid you to go. It was useless to forbid children to play in the park. Inhibit implies a checking or hindering of impulses by the mind, sometimes involuntarily: to inhibit one's desires; His responsiveness was inhibited by extreme shyness. Prohibit, a formal or legal word, means usually to forbid by official edict, enactment, or the like: to prohibit the sale of liquor. Taboo, primarily associated with primitive superstition, means to prohibit by common disapproval and by social custom: to taboo a subject in polite conversation.

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