large-scale
adjective [ before noun ]
uk/ˌlɑːdʒˈskeɪl/ usinvolving a lot of people, things, or activity, or happening over a large area:
They have announced large-scale changes in the organization.
After the development phase, the company hopes to move into large-scale production fairly soon.
large-scale redundancies/job cuts/layoffs
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small-scale