formidable, a.Scanrúil, do-iongabhála, forránta.You will find him a formidable enemy, is eagal duit é mar namhaid. She is a formidable woman, is maith an airí sheachanta í. It was a formidable array of men, ba thrúig baoil an tionól sin fear. ►formidably, adv.Go scanrúil, etc.