As a detective solving the mystery of the crossword clue ‘Dunderhead’, my thought process initially focused on identifying the common attributes of a dunderhead. I reckoned that a dunderhead could be described as someone who lacks intelligence, is ill-advised, or makes foolish decisions. Realizing this, I directed my attention towards the content of the crossword puzzle to better understand the specific requirements of the clue. After taking a closer look, I noticed that the clue had five letters, which meant that the answer was a short word. I then started to scan through the four blank boxes, and I realized that the fourth letter of the answer had to be ‘W‘. With the available letters, ‘NITWIT‘ became the only word that fit the bill. Delighted with my detective work, realization set in that NITWIT was indeed the perfect answer for the clue, and I hurriedly penned it down in the crossword.