No, the word 'suspicious' is not a noun; suspicious is an adjective, a word that describes a noun (suspicious behavior).
The noun forms for the adjective suspiciousare suspiciousness and suspicion. Both are abstract nouns.
suspect
Yes, the noun astonishment is an abstract noun, a word for an emotional reaction.
Is undergone an abstract noun
The abstract noun is criticism.
Abstract noun of hopeless
The abstract noun form for the adjective suspicious is suspiciousness.
The abstract noun form for the adjective suspicious is suspiciousness.A related abstract noun form is suspicion.
The abstract noun for suspect is "suspicion."
suspect
The noun form of suspicious is 'suspicion'.
Yes, the noun astonishment is an abstract noun, a word for an emotional reaction.
Is undergone an abstract noun
Concrete noun
The abstract noun is criticism.
The noun 'hopefulness' is an abstract noun, a word for an emotion.
The abstract noun is obligation.
Abstract noun of hopeless