- Definitions|1
- Thesaurus|273
- Abbreviations|0
| continuing(active, operative, operational) | |
| continuous(flowing, operating) | |
| current(active, running, working, operative, functioning) | |
| developing(active, operative, operational) | |
| doing | |
| easy(continuous, flowing, operating) | |
| efficacious | |
| effortless(continuous, flowing, operating) | |
| essential | |
| everyday(applied, hands-on, real-world) | |
| executing(continuous, flowing, operating) | |
| existent(active, operative, operational) | |
| existing(active, effective, operative, operational, virtual) | |
| extant(active, operative, operational) | |
| flowing(continuous, operating) | |
| fluent(continuous, flowing, operating) | |
| happening | |
| hardboiled(adjective, useful, possible, functional, workable) | |
| husbanding | |
| idiopathic(underway, marching) |
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| APA | Smart Define. (2015). in operation thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/in_operation/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "in operation thesaurus" https://smartdefine.org/in_operation/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, in operation thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/in_operation/thesaurus/synonyms>. |
| MLA | Smart Define. "in operation thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/in_operation/thesaurus/synonyms> |