Kangaroo word: rambunctious
Joey word: raucous
Definitions in relation to their use in kangaroo words, taken from Google Dictionary, and edited for formatting.
rambunctious (adjective): uncontrollably exuberant; boisterous.
raucous (adjective): making or constituting a disturbingly harsh and loud noise.
The letters R, A, U, C, O, U, and S found within the kangaroo word “rambunctious” arrange in the listed order to complete the joey word “raucous”. While a word can have multiple definitions, in relation to their use with kangaroo words, these two words share a similar meaning: strident.