The Plural is the same as that of the Relative, quí, quae, quae.
a. The singular quis is either masculine or of indeterminate gend[QUERY] but in old writers it is sometimes distinctly feminine.
b. The Adjective Interrogative Pronoun, quí, quae, quod, what kind [QUERY] what ? which ? is declined throughout like the Relative: -
|quis vocat, who calls ?||quí homó vocat, what man calls ?|
|quid vidés, what do you see ?||quod templum vidés, what temple do you s[QUERY]|
NOTE: But quí is often used without any apparent adjective force; and qui[QUERY] very common as an adjective, especially with words denoting a person: as, quí n[QUERY] nat mé? who calls my name ? quis diés fuit ? what day was it ? quis homó ? what [QUERY] but often quí homó? what kind of man? nesció quí sís, I know not who you are.
c. Quisnam, pray, who ? is an emphatic interrogative. It has both s[QUERY] stantive and adjective forms like quis, quí.