Quiet
Calm, Leisurely, Easy
adjective, adverb
Leisure with more leisure added on? That's a really quiet and leisurely life you've got going on!
Note that you need to add と to the end of this word to make it an adverb, and たる to make it an adjective!
ゆうゆう
The reading is just the on'yomi readings (which you learned with the kanji) twice in a row.
退職後は田舎で悠々と暮らしたいな。
After retirement I want to live a quiet life in the countryside.