Third person singular present tense of deplore: expresses strong disapproval or regret about something.
From deplore (Latin deplorare) with -s marking third person singular present tense in English.
In English grammar, the only time we add -s to a verb is when the subject is 'he,' 'she,' 'it,' or a singular noun—a remnant from Old English's more elaborate verb conjugation system that we've mostly shed.
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