This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.
If a word conforms to a special rule, I call it a Fantastical Word™.
Use the following examples below to find the rule.
And, if you want to analyze, here is a CSV version:
Fantastical Words™,Not Fantastical Words™ AKIN,DISSIMILAR SOAR,FALL DIARY,JOURNAL LETHAL,BENIGN RATER,GRADER GRADE,CATEGORY BASIN,PLATE ZESTER,PEELER GATORS,CROCS AMOUR,HATRED COULD,SHOULD FIAT,DENIAL BARTER,PURCHASE NORIA,DRAIN VINIER,BRANCH DRAW,ERASE LADE,UNLOAD MARANTA,COCONUT FAERY,BUTTERFLY JAUK,HURRY YUAN,DOLLAR KUKRI,RAPIER SHEA,PEANUT NARF,CONQUER SOLVERS,PUZZLERS DREADS,WELCOMED SHEAR,GROW OWNS,DESIRES LONE,GROUPED TONICS,POISON ISOLEAD,SQUARE VARUS,REGULAR