| Subject | English | Irish |
| gen. | bid challenge | agóid |
| gen. | to challenge a measure | agóid i gcoinne gnímh |
| gen. | challenge an act | agóid i gcoinne gnímh |
| med., R&D. | challenge area | achar faoi staidéar |
| med., pharma., R&D. | challenge dose | dáileog dhúshláin |
| med., pharma., R&D. | challenge exposure | nochtadh dúshláin |
| med., health., anim.husb. | challenge virus | víreas dúshláin |
| construct., immigr., ed. | Green Paper - Migration & mobility: challenges and opportunities for EU education systems | Páipéar Uaine - an Imirce agus an tSoghluaisteacht: dúshláin agus deiseanna do chórais oideachais an AE |
| health., anim.husb. | homologous challenge | dúshlán homalógach |
| law, market. | no-challenge clause | clásal toirmiscthe agóide |
| comp., MS | payment instrument challenge | dúshlán ionstraim íocaíochta (A fraud prevention mechanism that attempts to verify that an individual using a payment instrument is authorized to use or is the owner of that instrument) |