newcomer UK /ˈnjuːkʌmə/US /ˈn(j)uˌkʌmɚ/ noun2 •One who has recently come to a community; a recent arrival.Welcome, we²l'ku²m. a. Received with gladness, admitted willingly, grateful[…] Welcome, we²l'ku²m. interj. A form of salutation used to a new comer. — 1791 •A new participant in some activity; a neophyte. formsnewcomers