variable

nouns

something that is likely to vary; something that is subject to variation
"the weather is one variable to be considered"
is a type of (narrower)
a separate and self-contained entity
a quantity that can assume any of a set of values
a star that varies noticeably in brightness
a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity
is a type of (narrower)
an arbitrary sign (written or printed) that has acquired a conventional significance

adjectives

liable to or capable of change
"rainfall in the tropics is notoriously variable"; "variable winds"; "variable expenses"
is derived from
is derived from
is derived from
is derived from
antonym
is similar to
subject to change
"a changeable climate"; "the weather is uncertain"; "unsettled weather with rain and hail and sunshine coming one right after the other"
is similar to
changing so that interrelations with another variable quantity or set of quantities remain unchanged
is similar to
pertaining to any procedure involving two or more variables
is similar to
taking on different forms
"eyes...of that baffling protean grey which is never twice the same"
is similar to
continuously varying
"taffeta with shifting colors"
is similar to
exhibiting variation and change
"letters variant in size"
is similar to
changeable or inconstant
"versatile moods"
see also
displaying a lack of consistency
"inconsistent statements cannot both be true at the same time"; "inconsistent with the roadmap"
see also
likely to change frequently often without apparent or cogent reason; variable
"inconstant affections"; "an inconstant lover"; "swear not by...the inconstant moon"- Shakespeare
marked by diversity or difference
"the varying angles of roof slope"; "nature is infinitely variable"
is derived from
is derived from
is derived from
is derived from
is derived from
(used of a device) designed so that a property (as e.g. light) can be varied
"a variable capacitor"; "variable filters in front of the mercury xenon lights"
is derived from
is derived from
is similar to
capable of adapting (of becoming or being made suitable) to a particular situation or use
"to succeed one must be adaptable"; "the frame was adaptable to cloth bolts of different widths"