Antonyms of adj open-plan

1 sense of open-plan

Sense 1
open-plan -- ((of rooms or buildings) having large rooms with few dividing partitions)

INDIRECT (VIA unrestricted) -> restricted -- (subject to restriction or subjected to restriction; "of restricted importance")

Similarity of adj open-plan

1 sense of open-plan

Sense 1
open-plan -- ((of rooms or buildings) having large rooms with few dividing partitions)
       => unrestricted (vs. restricted) -- (not subject to or subjected to restriction)

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