1qual·i·ty 
/ˈkwɑ:ləti/ noun
plural qual·i·ties /ˈkwɑ:ləti/ noun 1 [noncount] : how good or bad something is
▪ Pollution affects air/water quality. ▪ The restaurant serves food of high quality. [=the food at the restaurant is very good] ▪ The dress material is of poor quality. [=the dress material is not good] — often + of ▪ The quality of the service we received was very good. ▪ The quality of their products has gone down. ▪ His attention to detail shows in the quality of his work. ▪ She has raised/improved her quality of life [=she has become more successful] with her new career. ▪ The drug is used to improve the quality of life for patients who have chronic illnesses. [=to make their lives more pleasant and enjoyable] 2 [count] : a characteristic or feature that someone or something has : something that can be noticed as a part of a person or thing
▪ Honesty is a desirable quality. ▪ Stubbornness is one of his bad qualities. ▪ She has strong leadership qualities. ▪ The house has many fine qualities. ▪ His music has a primitive quality. — often + of ▪ Hardness is a quality of steel. ▪ He considered the good and bad qualities of the car before buying it. 3 [noncount] : a high level of value or excellence
▪ wine of quality [=very good wine] ▪ They offer quality at a reasonable price.
▪ Pollution affects air/water quality. ▪ The restaurant serves food of high quality. [=the food at the restaurant is very good] ▪ The dress material is of poor quality. [=the dress material is not good] — often + of ▪ The quality of the service we received was very good. ▪ The quality of their products has gone down. ▪ His attention to detail shows in the quality of his work. ▪ She has raised/improved her quality of life [=she has become more successful] with her new career. ▪ The drug is used to improve the quality of life for patients who have chronic illnesses. [=to make their lives more pleasant and enjoyable]
▪ Honesty is a desirable quality. ▪ Stubbornness is one of his bad qualities. ▪ She has strong leadership qualities. ▪ The house has many fine qualities. ▪ His music has a primitive quality. — often + of ▪ Hardness is a quality of steel. ▪ He considered the good and bad qualities of the car before buying it.
▪ wine of quality [=very good wine] ▪ They offer quality at a reasonable price.
