This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Readily taking on varied shapes, forms, or meanings.

adj. Exhibiting considerable variety or diversity: "He loved to show off his protean talent” ( William A. Henry III).

adj. Exceedingly variable; readily assuming different shapes or forms.

adj. Of or pertaining to Proteus; characteristic of Proteus.

adj. Of or pertaining to Proteus; characteristic of Proteus.

adj. Exceedingly variable; readily assuming different shapes or forms.

Pertaining to Proteus, a sea-god of classical mythology, who could change his shape at will; hence, readily assuming different shapes; exceedingly variable.

[lowercase] In zoöl, changeable in form; executing movements involving shifting of shape, as an animalcule; amœbiform or amœboid; amœban; of or pertaining to a proteus-animalcule. Also proteiform.

n. An actor who plays a number of parts in one piece.

n. A salamander of the family Proteidæ; a proteid.

In the geology of New York, a name applied by the geologists of the first State Survey to the rocks now termed the Clinton beds of the Silurian system: in allusion to the variable character of the component stratigraphic elements.

adj. taking on different forms

"The borders of this new world will remain protean, subject to change over time."

variable   

protean animalcules    protean stone    shapeshifting    Protea   

multiform   

Achaean    Aegean    Boolean    Caribbean    Crimean    Cyclopean    Eritrean    European    Fujian    Galilean   

layersof    twangy    in-built    antiphospholipid    sou'west    anecdotage    mawkishness    switchers    fluky    classicrock