| 1 | English | tactic | A maneuver, or action calculated to achieve some... |
| 2 | French | tactique | tactic; tactical |
| 3 | Latin | tactica | — |
| 4 | Ancient Greek | τακτική | — |
| 5 | Ancient Greek | τακτικός | fit for ordering or arranging, especially in war;... |
| 6 | Ancient Greek | -τικός | relating to, suited to, skilled in, able to,... |
| 7 | Ancient Greek | -σις | Added to verb stems to form abstract nouns or... |
| 8 | Ancient Greek | -τις | Earlier form of -σις , retained after dentals δ,... |
| 9 | Proto-Indo-European | -tis | Derives abstract/action nouns from verb roots |