(ordered by popularity)
public
regular
such
annual
several
weekly
monthly
special
political
general
secret
frequent
religious
formal
private
informal
professional
subsequent
international
joint
numerous
open
quarterly
face
regional
periodic
future
daily
scientific
yearly
separate
previous
occasional
initial
clandestine
level
official
plenary
preliminary
departmental
ministerial
mass
protracted
endless
town
closed
evangelistic
successive
periodical
organizational
one
day
preparatory
corporate
extraordinary
consultative
executive
nightly
bilateral
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