1 [intransitive] vary (in something) (of a group of similar things) to be different from each other in size, shape, etc. synonym differThe students' work varies considerably in quality.The quality of the students' work varies considerably.New techniques were introduced with varying degrees of success.2 [intransitive] to change or be different according to the situation vary with somethingThe menu varies with the season. vary according to somethingPrices vary according to the type of room you need. vary from something to somethingPulse rates vary slightly from person to person. vary (between A and B)Class numbers vary between 25 and 30.“What time do you start work?” “ It varies.”3 [transitive] vary something to make changes to something to make it slightly differentThe job enables me to vary the hours I work.Our aerobics instructor varies the routine each week.AWL Collocations: varyvary verbto be different from each other; to become different or to changeestimate, opinion, pricing, ratio, result|rate, sizeEstimates vary because measurement techniques differ from study to study.considerably, greatly, significantly, substantially|widely|inversely|seasonallySpanish is spoken with an accent that varies considerably according to region.The cost of cattle varies inversely with supply.varying degreesThere are a wealth of resources on the World Wide Web, containing information with varying degrees of accuracy and reliability.variable nounindependent, predictor|dependent, outcome|continuous, categoricalOne predictor variable of early reading success is vocabulary knowledge.In this study, age was measured as a continuous variable ranging from 18 to 70 years.The categorical variables were gender and marital status.variation nounconsiderable, slight|spatial, temporal|genetic, geographic, seasonalThere is considerable variation; what works for one patient does not necessarily work for another.The area has spatial variations in rainfall, with the southern areas receiving more rainfall than central locations.variability nounconsiderable, substantial|climatic, geneticConsiderable variability in all aspects of testing practices was evident.Wild plant species usually have a great deal of genetic variability.within|across, among, betweenThere is considerable variability within the group, with some students reading at grade level, and others demonstrating significant reading problems.varied adjectivewidely|immensely, infinitely, richlyFibers may be derived from paper, metal, nylon, and other materials having widely varied physical properties.The judicial systems of the rest of the world are immensely varied.variable adjectivehighlyRainfall is highly variable, and the start and end of the two rainy seasons are unreliable.