Definitions in relation to their use in kangaroo words, taken from Google Dictionary, and edited for formatting.
Kangaroo word: astound
Joey word: stun
astound (verb): shock or greatly surprise.
stun (verb): astonish or shock so that they are temporarily unable to react.
The letters S, T, U, and N found within the kangaroo word “astound” arrange in the listed order to complete the joey word “stun”. While a word can have multiple definitions, in relation to their use with kangaroo words, these two words share a similar meaning: astonish.