Hai cercato la traduzione di dyrus da Gallese a Inglese

dyrus
intricate, difficult, confused, perplexing

dysgodd gysodi hefyd, er mwyn arbed y drafferth o gopïo, a dwbl a threbl gywiro gwaith y cysodwyr ar ddarnau anhawdd a dyrus;
he learned to typeset, in order to save the trouble of copying, and double and triple correcting the work of the compositors on difficult and complicated parts;