undoubtˈed adjective

1. Not doubted
2. Unquestioned
3. Certainly genuine or such as is represented
4. Indubitable

• gas jar
• gas jars
• gas jet
• gas jets
• gasket
• gaskets
• gaskin
• gaskins
• gas lamp
• gas lamps
• gas lift
• gas lifts
• gaslight
• gaslights
• gas-lime
• gas-liquor
• gaslit
• gas main
• gas mains
• gasman
• gas mantle
• gas mantles
• gas mask
• gas masks
• gasmen