Definition as Adjective

• of the highest quality

Definition as Adverb

• quite well

• ace, A-one, crack, super, tiptop, topnotch, top-notch, tops

• very well

• "an ace reporter"; "a crack shot"; "a first-rate golfer"; "a super party"; "played top-notch tennis"; "an athlete in tiptop condition"; "she is absolutely tops"

• "she doesn't feel first-rate today"

• First-rate vs ace
• First-rate vs A-one
• First-rate vs crack
• First-rate vs super
• First-rate vs tiptop
• First-rate vs topnotch
• First-rate vs top-notch
• First-rate vs tops
• First-rate vs very well