A foolish person (4)
(Other definitions for punk that I've seen before include "Form of rock music" , "Sex Pistols' music genre" , "Rock music -- American thug" , "Worthless person; seventies rock style" , "Aggressive style of rock" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">a foolish person</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for nitwit that I've seen before include "Silly fool" , "Fool, idiot" , "Informally a stupid person, like funny flea?" , "Twin it with a right eejit" , "Informally, a foolish person, featherbrain" .)