Root words of 9 letters or fewer with two valid spellings that differ only by OO versus U
52 words
SOOK SUK AGLOO AGLU BABOO BABU BHOOT BHUT IGLOO IGLU LOONY LUNY OOMPH UMPH POOJA PUJA POORI PURI TABOO TABU BABOOL BABUL DHOOTI DHUTI DOOFUS DUFUS MOOLEY MULEY NOODGE NUDGE OOMIAC UMIAC OOMIAK UMIAK SMOOSH SMUSH BOOMKIN BUMKIN OOMIACK UMIACK SANTOOR SANTUR SHADOOF SHADUF SQUOOSH SQUUSH TALOOKA TALUKA BLOOMING BLUMING TARBOOSH TARBUSH
Copyright © 2026 Mitch Bayersdorfer · AGPL-3.0 · Thanks to Joe Petree for his definitions for these lists. · Detailed Attributions