The phrase "in nerve" is not a commonly used term, therefore antonyms for this phrase are difficult to identify. However, if we consider 'nerve' as a word, its antonyms could include words such as cowardice, fearfulness, timidity, hesitation, and anxiety. These antonyms describe a lack of courage, strength, and confidence - the opposite of what 'in nerve' may imply. Other antonyms may include apathy, indifference, and laziness, as these words suggest a lack of motivation or interest in taking action. Overall, there are numerous antonyms for 'nerve' that can be used depending on the context and intended meaning.