I'm not sure but I would say : none
horizontal, zébré, zazou, azimuté
There are no adjectives beginning with the letter z that describe a shy person.
No adjectives end in i. Actually, no words in English end in i.
not all adjectives, but most adjectives from nouns do end in -ly, also adverbs from adjectives.
zany !
analyzablecognizableenzymaticfreezablehazardoushorizontalmagnetizablenonhazardousorganizationaloverzealousprotozoicquizzicalrealizablerecognizableschizophrenicsizablesizeablesqueezabletrapezoidalunrecognizablezealouszestfulzodiacalzonalzoologicalzoophyticzygotic
there are too many adjectives in French to give it a try. That wouldn't be much use anyway: with just a few hundred words (not only adjectives), you will be perfectly undertood by French speakers.
zealous
zaftigzanyzappedzappyzealouszerozestfulzestyzingyzippyzonked
icyjumpykindlumpymaniacalnewoptimisticpopularquietrambunctioussoftturbulentuglyvaguewetxenophobicyouthfulzesty
French declensions refer to the changes in the form of nouns, adjectives, and articles based on their grammatical role in a sentence. In French, there are two main types of declensions: masculine and feminine. Nouns, adjectives, and articles must agree in gender and number. Masculine nouns and adjectives typically end in -eau, -age, or -isme, while feminine nouns and adjectives often end in -tion, -sion, or -t. Adjectives usually come after the noun they describe and must match in gender and number. Articles like le, la, les, and un, une also change based on the gender and number of the noun they precede.
in spanish most feminine adjectives end with the letter A