moderate

Make less strong or intense; soften.

Make less fast or intense.

“moderate your speed”

Make more temperate, acceptable, or suitable by adding something else.

Make less severe or harsh.

“He moderated his tone when the students burst out in tears”

Lessen the intensity of; temper; hold in restraint; hold or keep within limits.

“moderate your alcohol intake”

Preside over.

“John moderated the discussion”

Not extreme.

“a moderate penalty”

Marked by avoidance of extravagance or extremes.

“moderate in his demands”

Being within reasonable or average limits; not excessive or extreme.

“moderate prices”

“a moderate income”

A person who takes a position in the political center.