Root words of 9 letters or fewer with two valid spellings that differ only by ER versus RE
86 words
SEER SERE EAGER EAGRE FIBER FIBRE LITER LITRE METER METRE MITER MITRE NITER NITRE OCHER OCHRE OMBER OMBRE SABER SABRE TITER TITRE BISTER BISTRE CENTER CENTRE GOITER GOITRE LOUVER LOUVRE LUSTER LUSTRE MAUGER MAUGRE ZAFFER ZAFFRE CALIBER CALIBRE DIOPTER DIOPTRE MACABER MACABRE PHILTER PHILTRE PIASTER PIASTRE SALTIER SALTIRE SCEPTER SCEPTRE SPECTER SPECTRE THEATER THEATRE UNMITER UNMITRE ACCOUTER ACCOUTRE BAYADEER BAYADERE CADASTER CADASTRE DECENTER DECENTRE DECALITER DECALITRE DECILITER DECILITRE DECIMETER DECIMETRE DEKALITER DEKALITRE DEKAMETER DEKAMETRE EPICENTER EPICENTRE KILOLITER KILOLITRE KILOMETER KILOMETRE MANOEUVER MANOEUVRE SALTPETER SALTPETRE SEPULCHER SEPULCHRE
Copyright © 2026 Mitch Bayersdorfer · AGPL-3.0 · Thanks to Joe Petree for his definitions for these lists. · Detailed Attributions