| Subject | English | Russian |
| gen. | not coincidentally | неслучайно (как вводное слово Олег Кузьменко) |
| gen. | not quite coincidentally | не совсем случайно (Their design and craftsmanship created pumps, propellers and even airplanes until, in the year 1956 – and not quite coincidentally – they produced the prototype of the Jacuzzi whirlpool bath. Andrey Truhachev) |