बीती (Hindi) comes from Hindi बीतना, from Prakrit 𑀯𑀺𑀢𑁆𑀢, from Sanskrit वृत्त, from Sanskrit वृत्, from Sanskrit अन, from Sanskrit अन्, from Proto-Indo-European h₂enh₁‑ — to breathe.
बीती (Hindi): that which has occurred, happened