Kangaroo word: prattle
Joey word: prate
Definitions in relation to their use in kangaroo words, taken from Google Dictionary, and edited for formatting.
prattle (verb): talk at length in a foolish or inconsequential way.
prate (verb): talk foolishly or at tedious length about something.
The letters P, R, A, T, and E found within the kangaroo word “prattle” arrange in the listed order to complete the joey word “prate”. While a word can have multiple definitions, in relation to their use with kangaroo words, these two words share a similar meaning: talk in a stupid way.