1 : to make (something) less harsh, strong, or severe or to become less harsh, strong, or severe [+ obj] ▪ The protesters have been unwilling to moderate their demands. [no obj] ▪ The wind moderated [=lessened] after the storm. 2 : to guide a discussion or direct a meeting that involves a group of people [no obj] ▪ She moderates at our office meetings. [+ obj] ▪ She moderates our discussions so that we don't argue or talk at the same time. ▪ moderate a debate





