1) Amphistylar 2) Colonnaded 3) Columnar 4) Columniform 5) Columnlike 6) Having or resembling columns 7) Like the Parthenon 8) Pillared Found on https://www.crosswordclues.com/clue/columned
adjective having or resembling columns; having columns of a specified kind (often used as a combining form); `a columned portico`; `trees with columned trunks`; `white-columned houses` Found on https://www.encyclo.co.uk/local/20974