What does AITU stand for? 

Aitu

In Polynesian languages the word aitu refers to ghosts or spirits, often malevolent. The word is common to many languages of Western and Eastern Polynesia. In the mythology of Tonga, for example, ʻaitu or ʻeitu are lesser gods, many being patrons of specific villages and families. They often take the form of plants or animals, and are often more cruel than other gods. These trouble-making gods are regarded as having come from Sāmoa. The Tongan word tangi lauʻaitu means; to cry from grief, to lament. In Māori mythology, the word aitu refers to sickness, calamity, or demons; the related word aituā means misfortune, accident, disaster. In Tahitian, aitu can mean 'god' or 'spirit'; in other languages, including Rarotongan, Samoan, Sikaiana, Kapingamarangi, Takuu, Tuamotuan, and Niuean, aitu are ghosts or spirits. In Cook Islands Aitu is also the name of ancient tribes who came from the east. In the Samoa Islands, aitu also means ghost.

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