In a way that causes choking, gasping, or difficulty breathing; in a manner that is suffocating or emotionally overwhelming.
From choke + -ing (present participle) + -ly (adverbial suffix). The -ly ending transforms adjectives and participles into adverbs indicating manner or way of action.
Adding -ly to almost any participle is one of English's most generous habits—it lets us turn feelings (like choking with emotion) into precise descriptions of how someone acts or speaks.
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