| Answer | Crossword Clue |
|---|---|
| STYX | Source of Achilles' strength |
| SINEW | Source of strength |
| SINEWS | Source of strength |
| UNION | Source of strength |
| ASSET | Source of strength. |
| MUSCLE | Source of strength |
| ASSET | Source of strength |
| UNITY | Source of strength |
| HAIR | Samon's source of strength |
| HAIR | Source of Samson's strength. |
| SPINACH | Source of Popeye's strength |
| UNITY | A source of strength |
| LOINS | Source of strength, symbolically |
| HAIR | Source of Samson's strength |
| COOLINGTOWER | Calming source of strength? |
| SINEWS | Source of strength, figuratively |
| ASSET | Anything that is source of strength. |
