unpillared

/ʌnˈpɪlərd/
adjective
  1. Having no pillars or columns; not supported by pillars.
    • They designed an unpillared hall to create an open, spacious feel.
    • The unpillared bridge was an engineering marvel for its time.
    • The old barn stood unpillared, its roof sagging under the weight of snow.
Antonyms
What does "unpillared" mean? | whatsthatwordmean | whatsthatwordmean