leaky

adjective, leak·i·er, leak·i·est.

1. allowing liquid, gas, etc., to enter or escape: a leaky boat; a leaky container.
2. Informal. unreliable: a leaky memory; a leaky tongue.

adjective leakier or leakiest

1. leaking or tending to leak

adj.mid-15c., from leak (n.) + -y (2). Related: Leakiness.