The phrase "toothing and nail" is a figure of speech that means to fight fiercely or with great determination. There are many synonyms that can be used to convey the same meaning, such as "fighting tooth and nail," "battling fiercely," "struggling vehemently," "waging a fierce fight," or "scrapping tenaciously." These words and phrases all describe a situation where someone is giving their all in a physical or emotional conflict, refusing to back down or give up until they have achieved their goal. Whether in a personal or professional setting, it's important to be persistent and have a fighting spirit when facing challenges.