| Answer | Crossword Clue |
|---|---|
| frivolous | (of a person) Carefree and not serious |
| unsmiling | (of a person or their manner or expression) Serious or unfriendly; not smiling |
| featherweight | A person or thing not worth serious consideration |
| featherweights | A person or thing not worth serious consideration |
| sobersides | A sedate and serious person |
| histoplasmosis | Infection by a fungus found in the droppings of birds and bats in humid areas. It is not serious if confined to the lungs but can be fatal if spread throughout the body |
