Solutions Having a pH less than seven has 4 entries with similar clues
- 4-letter words
- acidSubstance with pH of less than seven
- 8-letter words
- heptagonA plane figure with seven straight sides and seven angles
- 12-letter words
- obtuse-angleOf an angle more than 90 degrees and less than 180 degrees
- 15-letter words
- in-the-minorityHaving support of less than half