i Register
In some senses, confine is marked as obsolete, poetic. Watch for register when choosing this word.
ADV
entirely, exclusively, solely, strictly, totally
The damage from the storm was not entirely confined to the coastal areas.
increasingly
largely, mainly, principally
Her work as a nurse was mainly confined to the emergency department.
generally, normally | effectively
by no means, not necessarily
The problem of plastic pollution is by no means confined to coastal cities.
PREP
to
The discussion was confined to recent changes in company policy.