Noun

• S: (n) discrepancy, variance, variant (an event that departs from expectations)
• S: (n) form, variant, strain, var. ((biology) a group of organisms within a species that differ in trivial ways from similar groups) "a new strain of microorganisms"
• S: (n) random variable, variate, variant, stochastic variable, chance variable (a variable quantity that is random)
• S: (n) version, variant, variation, edition (something a little different from others of the same type) "an experimental version of the night fighter"; "a variant of the same word"; "an emery wheel is the modern variation of a grindstone"; "the boy is a younger edition of his father"

Adjective

• S: (adj) variant (differing from a norm or standard) "a variant spelling"
• similar to
• derivationally related form
• antonym
• S: (adj) variant (exhibiting variation and change) "letters variant in size"