"Hakuna matata" is a Swahili斯瓦希里語 phrase; translated, it roughly means "No problems".
It is formed by the words hakuna (there is not here) and matata (plural form of problem).
Its meaning is akin to "don't worry, be happy".
The phrase has been popularized by its use in The Lion King
(in which it is translated as "no worries" in a song named after the phrase)
so that it is heard often at resorts, hotels and other places appealing to the tourist trade.
The phrase is in more common use in Zanzibar桑吉巴and Kenya 肯亞.