deem /diːm/ BrE AmE verb [transitive not in progressive] formal
[ Language: Old English ; Origin: deman ]
to think of something in a particular way or as having a particular quality SYN consider
deem that
They deemed that he was no longer capable of managing the business.
deem something necessary/appropriate etc
They were told to take whatever action they deemed necessary.
be deemed to be something
They were deemed to be illegal immigrants.
be deemed to do something
UK plans were deemed to infringe EU law.