Vertical mirror words are terms composed exclusively of capital letters that possess vertical line symmetry (A, H, I, M, O, T, U, V, W, X, Y).
In geometry and orthography, eleven capital letters in the English Latin alphabet possess bilateral vertical line symmetry: A, H, I, M, O, T, U, V, W, X, and Y. When written in capital letters, words formed from this restricted alphabet retain exact symmetry across their vertical axis and read identically when viewed in a vertical mirror (or when combined with palindromic order, e.g. "MOM", "WOW", "TOOTH", "MAXIMUM").
Test any word to verify if its capital letters have vertical line symmetry:
Verified English words exemplifying vertical mirror words (line symmetry) with Scrabble scores
Linguistic definitions, etymological origins, and tournament usage
A vertical mirror word is spelled solely with letters that have vertical line symmetry: A, H, I, M, O, T, U, V, W, X, and Y.