Study the word list: Non-statutory words: the suffix -ous

poisonous	Not all snake bites are poisonous.
dangerous	Chlorine gas is very dangerous.
mountainous	A large part of Austria is mountainous.
famous	The new building was to be designed by a famous architect.
various	There were various amusements at the carnival.
tremendous	There was a tremendous roar when the goal was scored.
enormous	Elephants are enormous.
jealous	She has a very jealous boyfriend.
humorous	He has a humorous sense of fun and likes a good laugh.
glamorous	The model made a glamorous entrance.
vigorous	Activism is the policy or action of using vigorous campaigning to bring about political or social change.
courageous	The soldiers were courageous in battle.
outrageous	His comments were outrageous.
serious	The judge said it was a very serious crime.
obvious	There was an obvious attraction between the couple.
curious	I was curious to see how many people turned up.
hideous	The hideous creatures are conjuring up another spell.
spontaneous	There was spontaneous applause when he spoke.
courteous	Maria always thought that George was very courteous.