| HEPTADS | Groups or sets of seven (7) |
| OCTADS | Groups or sets of eight (6) |
| SEPTET | Any group or set of seven (6) |
| HEPTAD | Group or set of seven (6) |
| SEPTETS | Sets of seven |
| WEEKS | Certain sets of seven |
| STRINGS | Cords or lines; or, sets of onions, pearls or other things, threaded or tied together on such thin strands (7) |
| SYNERGY | From "working together", a word for the symbiotic co-operation or co-ordinated action of two or more agents, drugs, groups or other things (7) |
| CONCORD | Agreement or harmony between groups or people (7) |
| IGNITES | Catches fire or sets fire to (7) |
| ASSIGNS | Designates or sets something aside for a specific purpose (7) |
| CHOIRS | Organised ensembles of singers; groups of instruments of the same family playing together; or, sets of strings for harpsichords (6) |
| DUOPOLY | In economics, a situation in which two groups or organisations dominate commerce in one business market or commodity (7) |
| RAINBOW | ___ coalition, a political alliance between minority groups or parties of varying opinions (7) |
| LIAISON | Communication between groups or units (7) |
| PRIVATE | Confined to particular persons, groups or providing privacy (7) |
| PACKS | Groups of Cub Scouts or Brownie Guides; or, sets of playing cards (5) |
| SIXPACKS | Slabs of half-a-dozen cans of beer; or, sets of well-defined rectus abdominis muscles, or "abs" (3-5) |
| STAVES | Strips of wood forming barrels or pails; or, sets of five horizontal lines upon which music is written (6) |
| CHIMES | Flocks of wrens; or, sets of bells (6) |
