All depends on where you think one age ends and another begins. I use 18 to 35 for young adult and 36 to 65 for adult since most people I know in their 60s are not EA's definition of elder. Not even sure anyone under 70 fits that definition. For me, Adulthood is longer than young adulthood.
cheeky (comparative cheekier, superlative cheekiest) (informal) Impudent; impertinent; impertinently bold, often in a way that is regarded as endearing or amusing. 1899, Rudyard Kipling, chapter 4, in Stalky & Co.: Shut up, said Harrison. You chaps always behave as if you were jawin' us when we come to jaw you..
He was a pampered child who grew up to be vain and proud.She's a vain woman who spends half her time in front of the mirror. synonyms: conceited, narcissistic, stuck-up, vainglorious antonyms: modest similar words: arrogant, egotistical, proud, self-centered: definition 3: showing or resulting from excessive preoccupation with one's appearance.