Marked or modified by the use of an apostrophe, especially in written form.
From apostrophe plus the past participle suffix -ed. Describes text that has been deliberately marked with apostrophes, either for punctuation purposes or stylistic effect.
When you write 'don't' you've 'apostrophied' it—you've marked the contraction with that little curve—and this is probably why grammar teachers obsess so much about getting apostrophies right!
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