Adbrynwr, n. re-purchaser
Adchwanegol, a. additional
Adchwanegu, v. to re-augment
Adchwedl, n. a rumour
Adchwilio, v. to research
Adchwiliedig, a. researched
Adchwiliwr, n. a researcher
Adchwilio, v. to revolve
Adchwyl, n. a circumvolution
Adchwyladwy, a. revolvable