observer [observers](one who makes observations, monitors or takes notice) noun [UK: əb.ˈzɜː.və(r)] [US: əb.ˈzɝː.vər]I'm an observer. = Sono un osservatore.
osservatorenoun {m}
looker [lookers](one that looks actively) noun [UK: ˈlʊkə(r)] [US: ˈlʊkər]