Adrysedd, n. m. a second excess
Adryw, n. m. secondary species
Adrywiad, n. m. degeneration
Adrywio, v. to degenerate
Adrywiol, v. degenerating
Adsaf, n. f. a second standing
Adsain, n. f. echo
Adsefydlu, v. to re-establish
Adseilfanu, v. to found anew
Adseiniedig, a. echoed