| Answer | Crossword Clue |
|---|---|
| HIVED | Lived together in a close association |
| tithings | (in England) A group of ten householders who lived close together and were collectively responsible for each other's behavior |
| twin | to bring together in close association |
| twinned | TWIN, to bring together in close association |
| twins | TWIN, to bring together in close association |
| positronium | a positron and and an electron bound together in a short-lived unit, similar to a hydrogen atom |
| positroniums | POSITRONIUM, a positron and and an electron bound together in a short-lived unit, similar to a hydrogen atom |
