The adjective form is enigmatic.
youngest
fame
indignation
The suffix -ous is added to the noun mountain to form the adjective mountainous.
Youngest is an adjective.
Norway is a proper noun, not an adjective. It is the name of a country. It does not change.
The adjective form is enigmatic.
bustling
youngest
You can change the adjective "arrogant" into a noun by adding the suffix "-ce" to form the noun "arrogance."
To change "recent" into an adjective, you can add the suffix "-ly" to make it "recently."
You can change "affection" into an adjective by adding the suffix "-ate," resulting in "affectionate."
fame
Occasional
catastrophic
indignation