1 noun informalto do your damnedestdo dhícheall a dhéanamhhe's trying his damnedest to give up smokingtá sé ag déanamh a dhíchill éirí as an tobac2 adjective informaldamnedest thing, that's exactly what happenedan gcreidfeá gurbh in go díreach a tharla, is é an rud is iontaí ná gur sin díreach an rud a tharla