ați

Etymology 1
Probably from an old or proto-Romanian form (with a similar form attested in Aromanian), from. The form with -v- in the present form of the verb's main conjugation (as opposed to its use in this form as an auxiliary verb) may have been remade by analogy with ;  may also be seen as a reduced, clitic form of  See also, which has a parallel development.

Verb

 * 1) (you [all]) have...
 * Sunt sigur că l-ați întâlnit!
 * I'm sure you've met him!

Etymology 2
Presumably from a, from.

Verb

 * 1) (you [all]) would
 * Ați dori ceva de băut?
 * Would you like something to drink?