boxiest

/ˈbɑksiɪst/
adjective
  1. Most like a box in shape; most square or rectangular.
    • Among all the cars in the lot, the old van was the boxiest.
    • The boxiest room in the house was the storage closet.
    • She chose the boxiest container to pack the fragile items.
Antonyms
What does "boxiest" mean? | whatsthatwordmean | whatsthatwordmean