| Subject | English | Russian |
| lit. | be sunk in the deepest thought | глубоко задуматься ('But the glories of the landscape were all wasted upon my companion, who was sunk in the deepest thought.' (Sir Arthur Conan Doyle) ART Vancouver) |
| gen. | he was sunk in thought and didn't hear what I said | он пребывал в глубокой задумчивости и не слышал того, что я сказал |
| gen. | sunk in thought | погружённый в думы |