Adjective may be more rigid in some languages than others; in some, like Spanish, it may only be a default ("unmarked") word order, with other orders being permissible. Other languages, such as Tagalog, follow their adjectival orders as rigidly as English. The normal adjectival order of English may be overridden in certain circumstances, especially when one adjective is being fronted. In addition, the usual order of adjectives in English would result in the phrase "the bad big wolf" (opinion before size), but instead the usual phrase is "the big bad wolf", perhaps because the ablaut reduplication rule that high vowels precede
Adjective phrase "private" placed in post-object position only creates one interpretation. The structure of adjective phrases (and of all other phrase types) can be represented using tree structures. There are two modern conventions for doing this, constituency-based trees of phrase structure grammars and dependency-based trees of dependency grammars. Both types of trees are produced here. The important aspect of these tree structures—regardless of whether one uses constituency or dependency to show the structure of phrases—is that they are identified as adjective phrases by the label on the top node of each tree. The following trees illustrate head-final adjective phrases, i.e. adjective phrases