1. (noun) variable
something that is likely to vary; something that is subject to variation
Synonyms: variable star, variable quantity
Antonyms: unvaried, constant, strict, invariant, invariable, unadaptable, unvarying, hard-and-fast, changeless
2. (noun) variable, variable quantity
a quantity that can assume any of a set of values
Synonyms: variable star, variable quantity, variable
Antonyms: unadaptable, invariant, strict, unvarying, constant, changeless, hard-and-fast, invariable, unvaried
3. (noun) variable star, variable
a star that varies noticeably in brightness
Synonyms: variable star, variable quantity, variable
Antonyms: constant, unvarying, hard-and-fast, invariant, invariable, unadaptable, unvaried, changeless, strict
4. (adj) variable
a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity
Synonyms: variable star, variable quantity
Antonyms: invariant, hard-and-fast, unvarying, changeless, unvaried, invariable, unadaptable, constant, strict
5. (adj) variable
liable to or capable of change
Synonyms: varying
Antonyms: unvarying, hard-and-fast, changeless, invariant, constant, strict, unvaried, unadaptable, invariable
6. (adj) varying, variable
marked by diversity or difference
Synonyms: varying, variable
Antonyms: hard-and-fast, unvarying, constant, invariant, unadaptable, changeless, invariable, strict, unvaried
7. (adj) variable
(used of a device) designed so that a property (as e.g. light) can be varied
Synonyms: varying
Antonyms: unvarying, unvaried, changeless, invariant, unadaptable, constant, strict, invariable, hard-and-fast
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Synonyms and Antonyms of variable 
