Direct
Direct adjective - Done or working without something else coming in between.
In operation and direct are semantically related In some cases you can use "In operation" instead an adjective "Direct".
In operation
In operation adjective - Being in effect or operation.
Direct and in operation are semantically related in in use at the time topic. Sometimes you can use "Direct" instead an adjective phrase "In operation".
Mutual synonyms
Both terms in one sentence
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Macross Missile Massacre: Some Soviet artillery spotters in Operation Star are able to direct fire from BM-13 MRLs; both FAPLA-Cuba and UNITA-South Africa in Operation Hooper have spotters capable of directing the fires of the BM-21 and the Valkiri multiple rocket launchers, respectively.
Source: Video Game / Graviteam Tactics -
He becomes nastier after the HAWX squadron disobeys direct orders and refuses to abandon their allies during Operation Backfire, before finally betraying you in Operation Ulysses.
Source: Video Game / H.A.W.X.
Cite this Source
In operation and Direct. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/direct/in_operation
Direct & In operation. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/direct/in_operation>.
In operation or Direct. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/direct/in_operation.
Google Ngram Viewer shows how "direct" and "in operation" have occurred on timeline