Old Irish

Verb

at·chessa

1. passive plural preterite deuterotonic of ad·cí with infixed third-person singular pronoun
   • c. 750, Preface to Saint Patrick's Breastplate, published in Thesaurus Palaeohibernicus, (1901–03, Cambridge University Press; reprinted 1975, 1987, Dublin Institute for Advanced Studies), edited and with translations by Whitley Stokes and John Strachan, 2:354–58:

     conid annsin atchessa fiad lucht na netarnade comtis aige alta ⁊ iarróe ina ndiaid .i. Benen

     And then it appeared before those lying in ambush that they were wild deer with a fawn (Benén) following them.