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See word completions in TextEdit on Mac
You can see possible completions for a word you partially entered.
For example, for a partial word such as “ret,” you see options such as “return” or “retail.” When you enter “return,” you see fewer options, such as “returns” and “returning.”
In the TextEdit app
on your Mac, place the insertion point at the end of a partial word.
Choose Edit > Complete (or press Option-Esc), then select a word from the list.