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in operation

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effective adj.
operative adj.
practical adj.
running adj.

ADJECTIVE

effective

Synonyms

STRONGEST

active direct dynamic

WEAK

actual current in effect in execution in force operative real

Antonyms

STRONGEST

inactive

WEAK

fruitless impotent incapable ineffective inoperative unproductive useless weak

ADJECTIVE

operative

Synonyms

STRONGEST

operational usable

STRONG

current dynamic employable indicative key open running standing working

WEAK

accessible alive crucial effective efficient functional important in force live practicable relevant serviceable significant workable

Antonyms

STRONG

passive

WEAK

inactive ineffective ineffectual inoperative unfunctional unworking useless worthless

ADJECTIVE

practical

Synonyms

STRONGEST

businesslike constructive down-to-earth efficient factual feasible functional possible practicable pragmatic rational reasonable sane sensible sober workable

WEAK

applied both feet on the ground commonsensical doable empirical experimental handy hard-boiled implicit in action matter-of-fact nuts and bolts operative orderly serviceable solid sound systematic unidealistic unromantic usable utile utilitarian virtual workaday working

Antonyms

STRONGEST

excited impossible impractical inefficient irrational unattainable unfeasible unlikely unrealistic unreasonable unsound unworkable

WEAK

incapable inexperienced unproficient unseasoned unserviceable unskilled untrained useless worthless

ADJECTIVE

running

Synonyms

STRONGEST

constant functioning working

STRONG

active cursive dynamic executing going live moving operative proceeding producing smooth

WEAK

alive easy effortless fluent in action in succession incessant perpetual together unbroken unceasing uninterrupted

Antonyms

STRONG

apathetic immobile inactive unexciting

WEAK

broken discontinuous intermittent occasional

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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in operation

Once in operation, the Coronagraph Instrument will attempt to observe planets that are 100 million times dimmer than their host star, a significant improvement over James Webb.

From Los Angeles Times ● Aug. 30, 2026

More than 2,400 people are missing in Nepal, including 934 workers linked to power projects in operation or under construction, built as part of a hydroelectricity boom in the Himalayan country.

From The Wall Street Journal ● Aug. 29, 2026

Axpo said the second reactor at the Beznau plant in northern Switzerland, Europe's oldest nuclear power plant still in operation, went back online Thursday.

From Barron's ● Aug. 28, 2026

SpaceX currently has just one launchpad in operation, with another four in various stages of construction.

From MarketWatch ● Aug. 27, 2026

Now that the area was full of gunters, it became impossible for the Sixers to put their force field back in operation.

From "Ready Player One: A Novel" by Ernest Cline

in operation

Example Sentences

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