Answer: gasless

AnswerCrossword Clue
GASLESSRunning on empty?
GASLESSLike most dental practices, nowadays
GASLESSDevoid of carbon dioxide.
GASLESSLike some experimental cars
GASLESSWithout anesthesia, as surgery
GASLESSElectric, say
GASLESSLike most modern dental practices
GASLESSOut of fuel
gaslesshaving no gas