The word "unholy" is an adjective that describes something or someone as not conforming to religious principles, being immoral, sinful, wicked or evil. It can also refer to anything that is considered sacrilegious or profane, such as desecrating a place of worship or disrespecting sacred objects or symbols. In essence, the word "unholy" implies a lack of reverence for something believed to be divine or sacred by a particular religion or belief system.