| Subject | English | Russian |
| gen. | be on first name terms | обращаться друг к другу по имени (Palatash) |
| gen. | be on first-name terms | быть на "ты" (небуквальный перевод "to be on first-name terms" - (of two people) knowing each other well enough to call each other by their first names, rather than having to use a more formal title. • Jim has been in the company for many years, and is on first-name terms with many of the board directors. Palatash) |
| gen. | be on first-name terms | быть в приятельских отношениях (КГА) |
| gen. | be on first-name terms | быть запанибрата (КГА) |
| inf. | be on first-name terms with | быть на короткой ноге (с кем-либо ad_notam) |
| inf. | be on first-name terms with | быть на короткой ноге (с кем-либо ad_notam) |