Synonyms and Antonyms for first class | Synonym.com

Synonyms and Antonyms for first class

1. first class (n.)

the highest rank in a classification

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2. first class (n.)

mail that includes letters and postcards and packages sealed against inspection

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3. first class (n.)

the most expensive accommodations on a ship or train or plane

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4. first class (adv.)

by first class conveyance; with first class accommodations

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