exercise authoritative control or power over
lessen the intensity of; temper; hold in restraint; hold or keep within limits
power to direct or determine
a relation of constraint of one entity (thing or person or group) by another
(physiology) regulation or maintenance of a function or action or reflex etc
a standard against which other conditions can be compared in a scientific experiment
the activity of managing or exerting control over something
inflict damage upon
the occurrence of a change for the worse
