Common Words:
* Fabulous
* Humorous
* Jealous
* Marvelous
* Pitiful
* Ridiculous
* Splendid
* Tremendous
* Vigorous
* Wondrous
Less Common Words:
* Amicable (friendly)
* Capricious (unpredictable)
* Clandestine (secret)
* Colossal (huge)
* Contemptuous (scornful)
* Devious (dishonest)
* Dilapidated (run-down)
* Fabulous (extremely good)
* Formidable (impressive)
* Gregarious (outgoing)
* Horrendous (terrible)
* Hilarious (very funny)
* Incredulous (unbelieving)
* Magnanimous (generous)
* Meritorious (deserving recognition)
* Miraculous (amazing)
* Mysterious (unclear)
* Nefarious (wicked)
* Precarious (unstable)
* Scrupulous (careful)
* Turbulent (unruly)
* Ubiquitous (found everywhere)
* Vicious (cruel)
* Zealous (enthusiastic)
Note: The suffix "-lous" is usually added to adjectives to express a quality or characteristic. It's often associated with a strong or extreme version of that quality.