observer
Pronunciation:
/ɒb-//ɑb-/noun
Definitions
One who makes observations, monitors or takes notice
Example: Most impartial observers agreed that Sampras had not served well.
One who adheres or follows laws, guidelines, etc.
Example: I shall be an observer of the local customs.
A person sent as a representative, to a meeting or other function to monitor but not to participate
Example: The UN sent many observers to the country's first elections.
A country or other entity which has limited participation rights within an organization.
Example: The Vatican and Palestine have observer status at the UN.