whippersnapper
whip-per-snap-per
noun
A young, often impertinent or overconfident person, especially one considered insignificant.
"That whippersnapper thinks he knows everything."
Thesaurus
Synonyms: lightweight, jackanapes
whip-per-snap-per
A young, often impertinent or overconfident person, especially one considered insignificant.
"That whippersnapper thinks he knows everything."
Synonyms: lightweight, jackanapes