1. moderate, chair, lead, hash out, discuss, talk over
usage: preside over; "John moderated the discussion"
2. moderate, decelerate, slow down
usage: make less fast or intense; "moderate your speed"
3. control, hold in, hold, contain, check, curb, moderate, restrain, keep, keep back, hold back
usage: lessen the intensity of; temper; hold in restraint; hold or keep within limits; "moderate your alcohol intake"; "hold your tongue"; "hold your temper"; "control your anger"
4. mince, soften, moderate, change, alter, modify
usage: make less severe or harsh; "He moderated his tone when the students burst out in tears"
5. tone down, moderate, tame, change, alter, modify
usage: make less strong or intense; soften; "Tone down that aggressive letter"; "The author finally tamed some of his potentially offensive statements"