Strong's 5100 (τὶς)

a (kind of), any (man, thing, thing at all), certain (thing), divers, he (every) man, one (X thing), ought, + partly, some (man, -body, - thing, -what), (+ that no-)thing, what(-soever), X wherewith, whom(-soever), whose(-soever)

some or any person or object

an enclitic indefinite pronoun;