Adverb

(en adverb)

In an efficient or effective manner; with powerful effect.

* {{quote-news

, year=2011 , date=December 19 , author=Kerry Brown , title=Kim Jong-il obituary , work=The Guardian citation , page= , passage=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.}}

Essentially, in effect, for all practical purposes.

*{{quote-magazine, date=2012-03

, author=(Henry Petroski) , title=Opening Doors , volume=100, issue=2, page=112-3 , magazine= citation , passage=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.}}

Adverb

(en adverb)

Almost but not quite.

*

*{{quote-magazine, date=2013-07-06, volume=408, issue=8843, page=68, magazine=(The Economist)

, title= The rise of smart beta , passage=Investors face a quandary. Cash offers a return of virtually zero in many developed countries; government-bond yields may have risen in recent weeks but they are still unattractive. Equities have suffered two big bear markets since 2000 and are wobbling again. It is hardly surprising that pension funds, insurers and endowments are searching for new sources of return.}}

Without exaggeration.

In essence, but not in fact.

(algebra) Of a substructure of finite index.

(topology) Of a covering space of finite index.