Original, originate
Words that contain the root word of naut are nautical, astronaut and astronauts.
a
OutwitPayoutPigoutPoutedSouthSpoutStoutToutsTroutYouth
Some words that contain the root word "quest" include quest, question, request, and conquest.
astronaut
Necromorph
hemisphere
Holocaust
Civil
Mobster.
cabbage
Words containing the root word "pente" include pentagon, pentagram, and pentathlon.