An example would be "I spelt the word 'thread' for the spelling bee". Spelt is past tense, and indeed an older usage of spelled. Misspelt would mean that the word was not spelt correctly.
In relation to spelling, "spelled" is the past tense and past participle form of the verb "spell." It refers to the act of forming words by arranging letters in the correct order. For example, if someone asks, "How is your name spelled?" they want to know the specific arrangement or sequence of letters used to write your name.
The correct spelling for the Italian word meaning faces is spelt "Facce"
The word is spelled "spelling", just as you spelled it.
The word is spelled "evidently" (meaning apparently).
The word is spelt as you have in the question.
any
The word is spelled volume, just as you spelled it.
The word is spelled dumbo. It is a derogatory word, meaning stupid, slow, foolish, or dumb.
The word is spelled Oklahoma, just as you spelled it.
The spelling is "significant" (notable, or having some bearing).
The word heart is not spelled "haert". That is probably just a spelling mistake by someone. Someone just reversed the "a" and the "e" by mistake. That is easy to do when typing.
The word meaning "the state of being embarrassed" is spelt embarrassment.
No it is just really bad spelling for "spelled."