Here a list of indefinite adjectives and pronouns :

uno = someone (used in a personal way, like "si");

qualcuno = someone;

ogni = every/ each ( it places before a singular noun. Example: ogni persona);

tutti/tutte = all. even if it can have the following meanings= every, each, (+ a plural noun);

tutti e due/tutte e due = both (literally: all and 2);

ognuno = each person, everyone (only singular pronoun)

ciascuno/a, ciascun/a = each, each one (only singular pronoun);

qualcosa/qualche cosa = something

qualche = some (+ singular noun. only refers to a few objects/number/people). It sometimes means " a few";

alcuni/e = some. It sometimes means " a few";

alcun/a = used in order to form a negative with "non". Double negation is permitted in Italian language. Example: non c'e' nessuno= there is anyone;

altro/a/i/e = other, another;

qualsiasi = any;

qualunque = whatever;

chiunque = anyone (we do not know who, it is a generic term);

molto, molti/e (pronoun) - molto/a/i/e (adjective) = much, many (only the pronoun version does not have the female singular version);

poco, pochi (pronoun) - poco/a/hi/he (adjective) = few, little. The contrary of "molto", it follows the same rule;

un poco, un po' = a little, a bit;

troppo/i = too much/too many;

tanto = so much;

parecchio = some, several, a good deal;

tale/i = such;

certe persone = some people.

Special note: "del,dello, dei, degli, della, delle" prepositions sometimes, above all in spoken Italian, substitute "some".