The truly "verbal" adjectives are non-finite verb forms: participles (present and past), and sometimes to-infinitives.
For example: Sometimes deverbal adjectives additionally take prefixes, as in hand-fed turkeys, uneaten food and meat-eating animals.
Occasionally they are finite verb phrases: a must-see movie; their can-do attitude.
These are mostly equivalent to relative clauses in English; Japanese does not have relative pronouns like who, which, or when: 昨日Kinōyesterdayあのanothat人がhito-gaperson歩いた。aruita.walked昨日 あの 人が 歩いた。Kinō ano hito-ga aruita.yesterday that person walkedThat person walked yesterday.昨日kinōyesterday歩いたaruitawalkedあのanothat人。hitoperson昨日 歩いた あの 人。kinō aruita ano hitoyesterday walked that personThat person who walked yesterday...Japanese attributive verbs inflect for grammatical aspect as shown above, and also for grammatical polarity, but usually not for politeness.
For example, the word aoi, meaning "blue", effectively functions both as an adjective and as well descriptive verb, without changes in inflection: In the Bantu languages, attributive verbs are formed by the addition of the "pre-prefix" (or "initial vowel").
For example, in Luganda: This is similar to the behaviour of attributive adjectives: The attributive verb formation is the usual way of forming relatives in Luganda when the antecedent is the subject of the subordinate verb, and is sometimes called the "subject relative".