Llythyreg, n. grammar; the science of written language
Llythyregai, n. a grammatist
Llythyregol, a. grammatical
Llythyren, n. a type, a letter
Llythyreniad, n. a lettering, spelling
Llythyrenol, a. literal, literate
Llythyrenu, v. to letter, to spell
Llythyrenydd, n. type-founder
Llythyriad, n. lettering
Llythyriant, n. literature