This paper aims to explore the nature of adjectival passives in English and their properties. It claims that the past participle of the adjectival Passives is an adjective rather than a verb in nature. Supporting evidence for this claim includes the possible occurrence of the participle in the pre-modifying position of noun phrases, its coordination with adjectives, its complement (unction of adjective-subcategorizing verbs, its word-formation with the prefix un-, and its ability to take very as a modifier. It is also shown that adjectival passives have their own properties different from those of verbal passives. They are said to be characterized by these facts: the absence of their corresponding active sentences, the general tendency not to take [by + agentive NP], the limited range of their subject, impossibility to be in progressive aspect, to form get-Passives, and to occur after remain to be, co-occurrence with as yet, and complementary distribution with subject-oriented adverbs.