Arrant/ˈærənt/ Definition 1 of 2Pro Tip 1/3Strong Emphasis Used to emphasize the severity or extent of an attribute. That idea is arrant nonsense! Pro Tip 2/3Negative Situations Commonly paired with negative words to stress a negative trait. He’s being arrant stubborn! Pro Tip 3/3Archaic Tone It gives a sentence an old-fashioned or formal tone. She is an arrant fool to refuse the offer.