adj
adv
Freq #11521
Meanings
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1
adj
of the highest quality; excellent
The duke wanted to turn the performance into a first-class show.
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2
adj
belonging to the most comfortable or expensive class of travel or service
They reserved a first-class compartment for the overnight journey.
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3
adv
by the highest or most comfortable class of travel
The prize allowed the family to travel first-class for once.
Thesaurus
Etymology
From first class, originally the highest of several ranked divisions. The attributive hyphenated form broadened from rank and travel categories to the general sense 'excellent' or 'of the best quality.'