spelling
US /ˈspel.ɪŋ/
UK /ˈspel.ɪŋ/

1.
the process or activity of writing or naming the letters of a word
:
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Her spelling is excellent.
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Can you check the spelling of this word?
2.
the way in which a word is spelled
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The word has an unusual spelling.
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There are different spellings for the same sound in English.