The phrase 'under the ban' can be defined as something or someone that is prohibited, ostracized or rejected. There are a number of synonyms that can be used in its place to convey a similar meaning; such as banned, outlawed, blacklisted, condemned, taboo, prohibited, restricted, vetoed and prohibited. All these words are similar in that they convey the idea of something being forbidden or totally inaccessible. For instance, if a particular product is under a ban, it means that there are legal restrictions placed on the use or sale of that product. Similarly, an individual can also be under a ban if they have been judged guilty of a particular crime and are prohibited from participating in certain social activities.