adjective

effective

Existing or functioning in practice, whether formally recognized or not.

Although her title is assistant, Maya is the effective manager.

Etymology

Latin efficere means to accomplish or bring about. Effective can therefore describe what actually produces consequences or operates in practice, even without formal recognition.

More examples

The army has effective control of the region despite civilian rule.
With two opponents absent, the coalition has an effective majority.
The committee's advice amounts to an effective veto over new projects.

Forms

effective

effectively adverb — In practice, despite any formal distinction.

Similar words

actual: Emphasizes what really exists, rather than what is assumed.
de facto: Specifically contrasts practical reality with official or legal status.