1col·lec·tive 
/kəˈlɛktɪv/ adjective
always used before a noun /kəˈlɛktɪv/ adjective : shared or done by a group of people : involving all members of a group
▪ We made a collective decision to go on strike. ▪ The incident became part of our collective memory. ▪ a collective effort ▪ the collective wisdom of generations ▪ a collective noun [=a noun like “team” or “flock” that refers to a group of people or things]
▪ We made a collective decision to go on strike. ▪ The incident became part of our collective memory. ▪ a collective effort ▪ the collective wisdom of generations ▪ a collective noun [=a noun like “team” or “flock” that refers to a group of people or things]
— col·lec·tive·ly adverb
▪ the group of languages known collectively as Romance languages
▪ the group of languages known collectively as Romance languages
