One of the most recently proposed wordplays involves the name Noah, which occurs in several contexts in the Book of Mormon. Below is the abstract from Matthew Bowen, "'This Son Shall Comfort Us': An Onomastic Tale of Two Noahs," Interpreter: A Journal of Mormon Scripture 23 (2017): 263-298. Matthew, by the way, is the researcher who I think has done the most in recent years to explore ancient wordplays built into our text. I recommend looking at the list of his articles at The Interpreter.
Abstract: From an etiological perspective, the Hebrew Bible connects the name Noah with two distinct but somewhat homonymous verbal roots: nwḥ (“rest”) and nḥm (“comfort,” “regret” [sometimes “repent”]). Significantly, the Enoch and Noah material in the revealed text of the Joseph Smith Translation of Genesis (especially Moses 7–8) also connects the name Noah in a positive sense to the earth’s “rest” and the Lord’s covenant with Enoch after the latter “refuse[d] to be comforted” regarding the imminent destruction of humanity in the flood. The Book of Mormon, on the other hand, connects the name Noah pejoratively to Hebrew nwḥ (“rest”) and nḥm (“comfort” and “repentance” [regret]) in a negative evaluation of King Noah, the son of Zeniff. King Noah causes his people to “labor exceedingly to support iniquity” (Mosiah 11:6), gives “rest” to his wicked and corrupt priests (Mosiah 11:11), and anesthetizes his people in their sins with his winemaking. Noah and his people’s refusal to “repent” and their martyring of Abinadi result in their coming into hard bondage to the Lamanites. Mormon’s text further demonstrates how the Lord eventually “comforts” Noah’s former subjects after their “sore repentance” and “sincere repentance” from their iniquity and abominations, providing them a typological deliverance that points forward to the atonement of Jesus Christ.I appreciate the many insights into the text that come from understanding the vestiges of wordplays that appear to have been used by the original authors. As always, there is more than meets the eye waiting to be revealed in the pages of the Book of Mormon.