control has 28 distinct synonyms spread across 13 of its 20 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a relation of constraint of one entity (thing or person or group) by another
“measures for the control of disease”
(physiology) regulation or maintenance of a function or action or reflex etc
“the timing and control of his movements were unimpaired”
a standard against which other conditions can be compared in a scientific experiment
“the control condition was inappropriate for the conclusions he wished to draw”
the activity of managing or exerting control over something
“the control of the mob by the police was admirable”
the state that exists when one person or group has power over another
“her apparent dominance of her husband was really her attempt to make him pay attention to her”
discipline in personal and social activities
“he was a model of polite restraint”
great skillfulness and knowledge of some subject or activity
“a good command of French”
a mechanism that controls the operation of a machine
“the speed controller on his turntable was not working properly”
a spiritual agency that is assumed to assist the medium during a seance
the economic policy of controlling or limiting or curbing prices or wages etc.
“they wanted to repeal all the legislation that imposed economic controls”
maintain influence over (others or oneself) skillfully, usually to one's advantage
“She manipulates her boss”
verify by using a duplicate register for comparison
“control an account”
be careful or certain to do something; make certain of something
“He verified that the valves were closed”
Synonyms, antonyms and the broader and narrower relations for control come from Princeton University’s WordNet. Full sources and licences.