Related Clues:
- Element No. 18
- About 1% of Earth’s atmosphere, and a phonetic hint to this puzzle’s gimmick
- ''Aw, Mom!'' intonation
- About 1% of Earth's atmosphere
- Atmospheric noble gas
- Let everyone know you're in pain
- Inert gas in air
- Its atomic number is 18
- [What a joke!]
- National Archives' Declaration preservative
- #3 gas in the atmosphere
- Justice principally absent from the way some people talk or gas
- Element suggested phonetically by NOPQ STUV ..
- Noble gas in some lasers
- Colourless, odourless inert gas, Ar, used in some electric lights