multiple
The adjective form of concept is conceptual.The adjective form of conception is conceptional.
tourist
The adjective form is cranial.
Excitedly is not an adjective, it's an adverb. Excited is the adjective form. Adding -ly to many adjectives creates adverbs.
The adjective form for the pronoun they is their.
The Adjective form of Pathologist is Pathological.
The adjective form of concept is conceptual.The adjective form of conception is conceptional.
The adjective form of improve is "improved."
The plural form of the noun 'adjective' is adjectives.
The adjective form for the verb to develop is developable.
The adjective form of retire is :- retired, retiring.
Intentional. NB . Many adjectives in the English Language, particularly for abstract nouns, end in '--al'.