i Register
In some senses, restricted is marked as US, historical. Watch for register when choosing this word.
VERBS
be | remain
ADV
heavily, highly, narrowly, seriously, severely, very
Access to the building is heavily restricted to employees with special security clearance.
increasingly | fairly, rather, relatively, somewhat | apparently
unduly
The new rules have unduly restricted what students can discuss in class.
PREP
to
Entry to the swimming pool was restricted to members only during the renovation period.