“His diyuk in the Maharal was the basis for his sefer on Machsheves Yisroel." (Weiser)

“His diyuk in the way the package was addressed made him uncertain whether it was for him.” (Weiser)

"An example of weird diyukim is the idea that the ramban meant that Hashem might revive one person, moshiach, before everyone else." (source)