1) Architectural style 2) Lacking columns or pillars 3) Noncolumned 4) Uncolumned 5) Without columns 1) Noncolumned 2) Uncolumned 
Astylar (from Gr. ἀ-, privative, and στῦλος, a column) is an architectural term given to a class of design in which neither columns nor pilasters are used for decorative purposes; thus the Riccardi and Strozzi palaces in Florence are astylar in their design, in contradistinction to Palladio`s palaces at Vicenza, which are columnar. ...
• (a.) Without columns or pilasters.
term used to describe a facade that has no columns pilasters, or similar vertical features. 
Facade without columns or pilasters 
A·sty'lar adjective [ Greek 
In architecture the term astylar means without columns or pilasters.
[adj] - (architecture) lacking columns or pillars
adjective lacking columns or pillars
without columns.