in a class by oneself

noun

1. a number of people or things grouped together because of certain likenesses or common traits; kind; sort; category
2. a group of people considered as a unit according to economic, occupational, or social status; esp., a social rank or caste: the working class, the middle class
3. high social rank or caste
4. the division of society into ranks or castes
5. ☆
   1. a group of students taught together according to standing, subject, etc.
   2. a meeting of such a group
   3. a group of students graduating together: the class of 1988
   4. any group of persons that share a given year, as those elected to public office or selected for some honor
6. a division or grouping according to grade or quality: as orators, the President and the Senator were not in the same class
7. conscripted troops, or men liable to conscription, all of whom were born in the same year: to call up the class of 1947
8. Biol. a major category in the classification of animals, plants, etc., ranking above an order and below a division or phylum: it can include one order or many similar orders: the Latinized class names are capitalized but not italicized (Ex.: Mammalia, mammals)
9. Gram. in some languages, the formal classification by which nouns are grouped according to animateness, sex, shape, and other criteria
10. Informal excellence, esp. of style or appearance

transitive verb

adjective

1. first-class; very good
2. elegant; classy