· thrifty
In the phrase "extra careful" extra is an adverb modifying the adjective careful.
Portable
credible
LUNA
adjective phrase
probable
believable
Popular
An adjective (adjectival) phrase modifies nouns or pronouns. There are several types, including those based on an adjective (adjective and its adverbs), as well as adjective prepositional phrases, and infinitive phrases.
Well this would depend on what type of adjective phrase you are talking about. There are three different types of adjective phrases:Head-final adjective phrase - This contains an adverb and then an adjectiveHead-initial adjective phrase - This contains an adjective followed by a preposition and a noun.Head-medial adjective phrase - This contains an adverb followed by an adjective, preposition, and then a noun
The phrase "not common" is an adjective phrase, which can be expressed by the adjective "uncommon." It means not typical or ordinary.
an adjective phrase