Definition of defaulty in US English:

defaulty

adjective

rare
  • Defective, flawed, faulty. Of a person: at fault; guilty, especially of failure in the performance of a duty or obligation.

Origin

Late Middle English; earliest use found in William Langland (c1325–c1390), poet. From default + -y, perhaps after faulty.

Pronunciation

defaulty

/dɪˈfɔːlti/