Definition of "effectively"

The nightclubs generally provide liquor (at a price), pretty girls who are clad diaphanously but extremely effectively, a tiny space in which to dance [...] and food[.]

1946, George Johnston, Skyscrapers in the Mist, page 89

A state ideology, mixing nationalism, and basic Marxist economics, going under the name "Juche", was constructed, and Kim Il-sung effectively silenced, disposed of and cleared away any opposition, isolating the country and exercising an iron grip on the military, the state media and the government and party organs.

2011 December 19, Kerry Brown, “Kim Jong-il obituary”, in The Guardian‎

A doorknob of whatever roundish shape is effectively a continuum of levers, with the axis of the latching mechanism—known as the spindle—being the fulcrum about which the turning takes place.

2012 March, Henry Petroski, “Opening Doors”, in American Scientist‎, volume 100, number 2, pages 112–3